Statistics and Probability questions and answers in March 2023 — Page 14

Are there outliers in the distribution of BMI? Please justify your answer. Use the following data for questions 1-6. Round all answers to the nearest tenth (one decimal place) The following are body m...
Can you help explain how to build the model in excel?  Our instructor has been all over the place explaining things.  Thank you.    . . Let A > 0 be an (unknown to us) parameter. . Although unk...
1- In multiple linear regression, in what context should standardized coefficients be used? a-to determine the equation of the line b- to compare predictors with each other c- to determine the statist...
Can you help me pls to choose the correct answer?  If you correlate test scores from your test with some other valid measure that assesses the same set of abilities, which type of valid evidence are ...
  Need answers to the following:   1. Your hypothesis (NON-Directional): Based on the Activity Type (IV) and Depression (DV). o REMINDER...Use the following style for your NON-Directional: "The hypo...
The following probability tree, where B is the event an employee has a bachelor's degree, B− is the event an employee does not have a bachelor's degree, S is the event a sale is made and S− is the...
Please use t-table provided below.  . Exercise 1: You read an article that claims that the average transfer size of Venmo trans- actions is $50. You however think that the article might be wrong. Wit...
Question 8 of 8 An HR administrator wishes to know the proportion of employees that are currently using a very costly benefit to determine if it is still considered valuable by the staff. If the admin...
Carrie's parents are interested in how she is doing in comparison to other children her age. Her teacher has a variety of scores available for her. Which score is best to report to Carrie's parents? ...
A sports reporter conducts a study of the fans' overall satisfaction with the sporting event after the event is completed. He surveys 157 randomly selected fans on their way out of the event and asks ...
5. 7. Options for e) and f): These are examples of answer (not real answers)    . A company is criticized because only 15 of 40 executives at a local branch are women. The company explains that alth...
 . Consider the Bayesian model y 01, 02 ~ N(01 + 02, 1), Oi ~iid N(0, v2), i = 1, 2. ~ Inv - Gamma(100, 100). Suppose y = 1 is observed. Then, find the full conditional distributions of 01, 02, and v...
 . Suppose X1 = # + 1, X2 = X1 + / + 62, and X3 = X2 + / + 63, where c; ~did N(0, 1). Assume the prior / ~ N(0, 1). The final observation is known to be X3 = 6. Then, find the posterior distribution ...
Refer to the following table: Ages (years) Population # Deaths Population A     15-19 1000 30 20-24 4000 16 25-29 6000 121 Total 11000 167 Population B     15-19 5000   20-24 2000   25-29 500  ...
Conrad's Cakes specializes birthday cakes. A birthday cake costs $25 each to make and sells for a price of $35 for the next two days while it is still fresh.  All cakes not sold during the first two ...
 . Spring 2023 Midterm Exam 2. In a PCB manufacturing company, a new product needs to be produced. The customer needs 1,000 PCBs. However, some of the PCBs may get rejected at the finial inspection s...
 . Spring 2023 Midterm Exam 1. Suppose X1 = M +61, X2 = X1 + + 62, and X3 = X2 + M + 63, where ci ~ad N(0, 1). Assume the prior u ~ N(0, 1). The final observa- tion is known to be X3 = 6. Then, find ...
help please. B: Correlation Correlations Educational Level Current (years) Salary Educational Level Pearson Correlation 1 661(**) (years) Sig. (2-tailed) 000 N 474 474 Current Salary Pearson Correlati...
QUESTION 9   Your boss, the chief financial officer (CFO), has just handed you the estimated cash flows for two proposed projects: Project L and Project S. Both projects have 3-year lives.     Afte...
7. Options: Options for b): should be/should not be, should be/should not be, the sample size is/is not, should be/should not be 8)  Options: Options for the very last problem: do/do not reject, is/i...
Researchers want to construct a 95% confidence interval for the difference in means from the two locations. What percentile would you use to construct the confidence interval? Group of answer choices ...
A random sample of 300 shoppers at a large supermarket includes 234 who regularly use discount coupons. Construct a 98% confidence interval for the probability that any one shopper at that supermarket...
We take a random sample of 50 from the STA 13 class last year. (The total number of students was 419.) On the final exam, the mean score of the sample was 56.3 and the sample standard deviation was 13...
The mean output of a certain type of amplifier is 110 watts with a variance of 100. If 44 amplifiers are sampled, what is the probability that the mean of the sample would be greater than 111.8 watts?...
Develop your own coding scheme to help you analyze the qualitative data collected To develop a coding scheme, you first need to read through all of the open-ended responses multiple times to get an id...
hello please only provide the answers thank you.     . A genetic experiment with peas resulted in one sample of offspring that consisted of 404 green peas and 153 yellow peas. a. Construct a 95% co...
Please give accurate answers with solutions. Thank you!. Il. Identification Identify what is asked. Write your answer on the space provided. Write the complete solutions at the solution template and u...
1.  A tire manufacturer tested the braking performance on one of its tire models on a test track. The company tried the tires on 10 different cars, recording the stopping distance for each car on bot...
Mayonaise pH aW Sample No. A B 1 3.31 0.900 2 3.22 0.855 3 3.28 0.885 4 3.24 0.865 5 3.15 0.840 6 3.29 0.890 7 3.30 0.895 8 3.31 0.900 9 3.26 0.875 10 3.28 0.885 11 3.21 0.850 12 3.24 0.865 13 3.34 0....
What are the three major differences between a normal distribution and a binomial distribution? Why is the Normal Distribution called "Normal"? What are examples of exponentially distributed random va...
 . Assume that when human resource managers are randomly selected, 44% say job applicants should follow up within two weeks. If 11 human resource managers are randomly selected, find the probability ...
Use the output from the R code provided to answer parts a - d. 1. For the 2002 General Social Survey, counts in the marital happiness categories (not, pretty, very) were (6, 43, 75) for below average ...
5. Change 35% to 41% below. 3. Options are is/is not.  . A company is criticized because only 15 of 40 executives at a local branch are women. The company explains that although this proportion is lo...
An engineer is doing a study in a manufacturing setting on the lengths of paperclips. The sample he collected is in the dataset paperclips.xlsx. Assume that the target value for the paperclip length i...
A service station has three servers, indexed 1, 2, and 3. When a customer ar- rives, he is assigned to the idle server with the lowest index. If all servers are busy, the customer goes away. The servi...
 . The accompanying table provides the data for 100 room inspections at each of 25 hotels in a major chain. Management would like the proportion of nonconforming rooms to be less than 2%. Formulate a...
 . Exercise 1: You read an article that claims that the average transfer size of Venmo trans- actions is $50. You however think that the article might be wrong. With the help of your uncle that works...
Hello, can you please show work for the question. Thank you and much appreciated!    . Answer the following questions with TRUE or FALSE, and explain your answer. (a) Let a random sample of independ...
7. 8. 11. Repeat for c) and d) as well.. In 1960, census results indicated that the age at which men in a certain region first married had a mean of 24.3 years. It is widely suspected that young peopl...
 . The price of a certain combo meal at different franchises of a national fast food company varies from $5.00 to $17.35 and has a known standard deviation of $2.35. A sample of 28 students in an onl...
We take a random sample of 50 from the STA 13 class last year. (The total number of students was 419.) On the final exam, the mean score of the sample was 56.3 and the sample standard deviation was 13...
 . A national magazine stated that at most, 21% of millennials have a gym membership. Formulate an appropriate one-sample test of hypothesis to test this. . . . Determine the null hypothesis, Ho, and...
write down the r code please  use r to solve . The data rental_pp208.csv (or RENTAL_PP208.dta) contains panel data on average rent in 64 major cities in 1980 and 1990. 13 of those cities imposed ren...
This is  answer for a (please solve b,c,d)  For 2b, is gamma(n,lambda) correct?   im thinking 2c is find expected value of 1st customer leaving + expected value of 2nd customer leaving which would ...
One study claimed that 86% of college students identify themselves as procrastinators. A professor believes that the claim regarding college students is too high. The professor conducts a simple rando...
The table below shows the number of survey subjects who have received and not received a speeding ticket in the last year, and the color of their car. Red Car Not Red Car Total Speeding Ticket 45 26 7...
A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4550 patients treated with the drug, 158 developed the adverse reaction of nausea. Construct a 90% confidence ...
Hey could you please help me with the blanks. A roulette wheel has 18 red pockets, 18 black pockets, and two green pockets. A gambler enters the Silver Tip Grizzly Casino and decides to play n = 50 ga...
I need help completing this assignment, I'm asked to generate a scenario that would require the use of a one sample or independent samples t-test, by stating the research question and matching hypothe...
 . Exercise 1 The company Pym Technologies claims that a certain brand of their nanotech batteries lasts, on average, 3000 hours. You suspect that the true average battery life is less than 3000 hour...
please answer 1-10. Permutation or combination . (134) ¢ love songs wt 4« x 6 what to do after theft - Gr x © surrounding s - Googl- Your goal in this section is to apply the key concepts of combi...
Please solve by choosing the correct letter and filling in the blank at the end of it. Write the binomial probability and the normal probability for the shaded region of the graph. Find the value of e...
Thirty college students were surveyed and asked to report gender, age, sexual orientation, whether they thought their relationships were healthy, and their overall relationship satisfaction using the ...
Please write which is permutation or combination. # 1-10. (134) ¢ love songs wt 4« x 6 what to do after theft - Gr x © surrounding s - Googl- Your goal in this section is to apply the key concepts ...
4.4. A service station has three servers, indexed 1, 2, and 3. When a customer ar- rives, he is assigned to the idle server with the lowest index. If all servers are busy, the customer goes away. The ...
Question 1 (Refer to Sections 1.1-1.3, 2.2-2.6)  The data file A1Q1.csv contains nutritional data on people involved in a study of patients that had an elective surgical procedure during a three-year...
 . In a bag of 330 chocolate candies, 34 of them are brown. The candy company claims that 13% of its plain chocolate candies are brown. For the following, assume that the claim of 13% is true, and as...
Please solve. A binomial experiment is given. Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, find the mean and standard deviation. If you cann...
"Doctors led by Daniel Kripke of the Scripps Clinic Viterbi Family Sleep Center in La Jolla, California, looked at the medical records of more than 10,500 adults living in Pennsylvania who were taking...
 . The average U.S. daily internet use at home is 140 minutes. A sample of 64 homes in Soddy-Daisy showed an average usage of 170 minutes with a standard deviation of 80 minutes. We are interested in...
Upon studying low bids for shipping contracts, a microcomputer manufacturing company finds that intrastate contracts have low bids that are uniformly distributed between 20 and 25, in units of thousan...
bottled water distributor wants to determine whether the mean amount of water contained in​ 1-gallon bottles purchased from a nationally known water bottling company is actually 1 gallon. You know f...
 . 8. Empirical and Frequency Distribution Probabilities Finding Empirical Probabilities: A company is conduction a survey to determine how prepared people are for a long-term power outage, natural d...
 . A report classified fatal bicycle accidents according to the month in which the accident occurred, resulting in the accompanying table. Month Number of Accidents January 38 February March 45 April...
I had calulated the varaince. How do I calulate the SS, df, MS, F-test and p-value in excel? Like what are the formulas I should use.. File Home Insert Draw Page Layout Formulas Data Review View Autom...
 . In Exercises 2.236 to 2.239., two variables are defined, a regression equation is given, and one data point is given. a. Find the predicted value for the data point and compute the residual. b. In...
Download the following data sets: https://courses.edx.org/asset-v1:UTAustinX+DataSci.312+1T2022+type@a..k@TexasCityDistanceMatrix.csv https://courses.edx.org/asset-v1:UTAustinX+DataSci.312+1T2022+type...
clit is metric or English. Metric English = The patient is 130 centimeters tall The patient weighs 150 pounds = Walk 500 meters = Walk 5 Add one cup of sugar to the solution Add 25 g of salt Drag and ...
I have students with similar replies and was wondering if you could help me answer this one. Discuss the main differences between Bayesian and frequentist approach to linear regression. As a data anal...
Please show all work and state the conditions listed. Thank you.  . For every hypothesis testing question, please state all of the following: . Null and alternative hypothesis (symbolically) . Distri...
Please show all work and state the conditions listed above. Thank you.. For every hypothesis testing question, please state all of the following: . Null and alternative hypothesis (symbolically) . Dis...
 . #IHP 525 Quiz Two 1. A telephone survey uses a random digit dialing machine to call subjects. The random digit dialing machine is expected to reach a live person 15% of the time. a. True or False:...
In Numbers 1:1-3. Why was data being collected about Israel? Gravetter, F. J., Wallnau, L. B., Forzano, L. B., & Witnauer, J. E. (2021).  Essentials of statistics for the behavioral sciences  (1...
Upload the data file ToyotaCorolla1000.jmp with all scripts you saved in Questions 1-4.   Please I need the completed file to this problem.  . X ToyotaCorolla 1000 - JMP Pro File Edit Tables Rows ...
 . The next two questions (24 and 25) refer to the following: The manager of a clothing store would like to compare the sales of three employees. The daily sales (in $) for each of the three employee...
 . 23. We would like to conduct an analysis of variance at the 5% level of significance to compare the weights of players on different Canadian Football League (CFL) teams. A random sample of three p...
 . 22. We would like to compare the lifetimes of the cell phone charges for seven common cell phone brands. A random sample from each of the seven cell phone brands was selected and the lifetime (in ...
Q1. Which of the following study designs is most efficient in studying a rare disease? A. Case-control B. Cross-sectional C. Cohort D. None of the above   Q2. What is the most appropriate statistic f...
Tom, a counseling major, had a hypothesis he wanted to test. He believed that the more people exercised, the higher their self-esteem would be.  He recruited 85 participants (37 women and 48 men) who...
Answer the part 2 please:   [Problem: Corporations have to select among many projects that are under consideration by the management. Their primary instrument for evaluating and selecting among the a...
A cell phone company gets a really good deal on 400 Samsung phones. Of them, 250 have 5" screens and the rest have 4" screens, Of the phones with 5" screens, 140 are silver and the rest are black. Of ...
 . Suppose X and Y are independent random variables, and P(Y = 0) = 0. Which of the following expressions equal E ? Prove your answer.. . E( X/ Y) = E(X) /E( Y ) . E(X/ Y) = E(X) /E(1/ Y) . E( X/ Y) ...
Exercise 8.4 For each of the following hypotheses, state whether a one-tailed or a two-tailed test of statistical significance would be appropriate. In each case, explain your choice.     a. H1: Cit...
For a state track and field competition, each school submits the best performance for their top 3 athletes in each event.  For female pole vaulters , the distribution of vault heights that were submi...
Problem: Corporations have to select among many projects that are under consideration by the management. Their primary instrument for evaluating and selecting among the available projects is the benef...
 . Question 2 0 / 1 pts A restaurant analyses its customers complaints and finds out the following: I-All customers have at least one complaint 1I-70% of the customers have more than one complaint Il...
Calculating the average for "gender" would not be possible because: Group of answer choices There would be insufficient sample size   The level of measurement for gender does not allow for calculatin...
A researcher studies clients at a nearby mental health center and summarizes data on these clients in a report. This is an example of descriptive statistics rather than of inferential statistics. Grou...
Answers needed . 6. IQ scores of people around the world are normally distributed with a mean of 100 and a standard deviation of 15. A genius is someone with an IQ greater than or equal to 140. What ...
Develop a histogram and assess the distribution of each variable. Consider why the distribution of the data is important. Provide Reference   Independent Variables Independent Variables (IVs)  Justi...
Questions 1-4 are based on the following:   The textbook expense of 96 students in a statistics class is shown below.  Treat the data as population data.   340 510 390 740 570 590 590 700 710 270 5...
 . Using the Chebyshev Inequality to show convergence in probability of the following problem. (a) Suppose X1, . .., Xn are independent with common expected value / = 0. Suppose V(Xk) = k-2. Let Yn =...
How do I find the residual? How do I find the. He D2L Gr Se X X CA https://learn.zybooks.com/zybook/MAT-240-J4737-OL-TRAD-UG.23EW4/chapter/2/section/3 G =zyBooks My library > MAT 240: Applied Stati...
Is there a difference in the satisfaction rating of traditional cellphone providers who bill for service at the end of a month often under a contract and prepaid cellphone service providers who bill i...
 . Cortez Manufacturing intends to increase capacity by overcoming a bottleneck operation by adding new equipment. Two vendors have presented proposals. The fixed costs are $60,000 for proposal A and...
 . Borges Machine Shop, Inc., has a 1-year contract for the production of 75,000 gear housings for a new off-road vehicle. Owner Luis Borges hopes the contract will be extended and the volume increas...
 . 6. Next, test for an interaction effect between location and lure. a. (2 points) State the null and alternative hypotheses in words to test if the interaction term is significant in the model. b. ...
    answer all the questions above please. nothing is missing here.. 12. 13. 14. . Informally, what is a combination? . Formally define the phrase "a combination of n distinct elements taken 16 a...
  In his game on July 9, 2017, pitcher Clayton Kershaw's distribution of fastball speed was roughly normal with a mean of 92.3 mph and a standard deviation of 0.7 mph.   About what percentage of h...
1. Say that the scores on a test are normally distributed and the mean score is 10, with a standard deviation of 1. What is the lowest whole number score you could get if you want to score as well or ...
  In the 2008 season, Kobe Bryant was named the NBA's most valuable player.  Here is a dotplot showing the distribution of points scored by Bryant during this season.  The mean of these 82 games i...
A researcher reports an F-ratio with df = 3, 24 for an independent-measures experiment. If all the treatments had the same number of participants, then how many individuals were in each treatment?​ ...
What do the MS values represent in an ANOVA? Select one: a. ​ the total variability for the set of N scores     b. ​ population variance     c. ​ sample variances     d. ​ the average di...
  You and your friends decide to start a fantasy basketball league using four categories: points, rebounds, assists, and turnovers.  Bigger values are better for points, rebounds, and assists, but ...
Use the following data to develop a quadratic model to predict y from x. Develop a simple regression model from the data and compare the results of the two models. Does the quadratic model seem to pro...
data values are 15,9,5,4. O 3. [1.68/5 Points] DETAILS PREVIOUS ANSWERS PODSTAT6 12.R.033.5. MY NOTES ASK YOUR TEACHER The color vision of birds plays a role in their foraging behavior, Birds use colo...
Summarize the One-Way ANOVA analysis. - What does the One-Way ANOVA do? - What conclusions can we make when we perform the One-Way ANOVA? - When can we use the One-Way ANOVA procedure in SPSS? (How m...
Students in STA 250.599 are in progress toward a graduate degree.  Does advanced education mean that you are likely to work more hours week than your less-educated co-workers? Use the GSS2014 samp...
The time to failure of a component in an electronic device has an exponential distribution with a mean of 4 / ln( 2 ) hours. The probability that the component will work without failing for at least 5...
2(a) answer is  please solve b c d. P bu 2/ : 1) P (X, = dia ( x; )) = P(X, < min (X2, X3)) From claw, min ( X21 X3 ) ~ Exp (+2+ 23) and 15 independent from X, , so from class again, we obtain P (...
 . Question 2 Consider two prediction models F1 and F2. The average squared error and Dawid-Sebastiani scores have been evaluated for Not yet answered the test data ytest and are presented in the tab...
What percent of unplanned extubations occurred after day one but still within the first week of mechanical ventilation? article  INFLUENCE OF PHYSICAL RESTRAINT ON UNPLANNED EXTUBATION OF ADULT INTEN...
neat and correct. 2. The following data give the odometer mileage (rounded to the nearest thousand kilometres) for all 20 cars that are for sale at a dealership. 62 86 58 84 72 40 27 38 50 43 27 40 90...
 . Current Attempt in Progress More Information From the Online Dating Survey A survey conducted in July 2015 asked a random sample of American adults whether they had ever used online dating (either...
Hey so I'm confused on how to get the type one error, I'm not really sure what values to use rom the graph and why, same thing for type two. If you can explain and do the questions as I learn best fro...
 . ework Question 17, 6.4.6-T Part 1 of 3 HW Score: 45.67%, 9.13 of 20 points Points: 0.33 of 1 The overhead reach distances of adult females are normally distributed with a mean of 202.5 cm and a st...
 . QUESTION 9 A certain company wants to study the relation between its advertising expenditure and its sales. So, the company collect: data of the advertising expenditure and the sales from each of ...
1. A rate is a fraction.  What is the numerator (top) of a rate called?   2. A rate is a fraction. What is the denominator (bottom) of a rate called?   3. For a z -score of zero, what is the propor...
Report and interpret the results for the significance test for each unstandardized regression coefficient in correct APA style, and report/interpret  the semipartial correlation sr y(1.2)  and s...
Hemoglobin levels in 11-year-old boys vary according to a normal distribution with σ=1.2 g/dL. How large a sample is needed to estimate µ with 95% confidence, so the margin of error is no greater th...
1. What are required characteristics of a variable?  a.Both exhaustive and exclusive  b.Neither exhaustive nor exclusive are necessary c. Mutually exclusive  d.Exhaustive   2. Which of the followi...
If you are throwing a single die: a) What is the probability of getting an 'even' number? b) What is the probability of getting 6 'even' numbers in a row?    If you are throwing two dice: a)  What ...
 . Problem 1 Let X be an exponential variable with unknown parameter 1. We know that P (X < 10) = ? a. Find 1. b. Compute P (X > 15). c. Compute P (X > 15 X 2 10) (use the memoryless propert...
 . Homework Question 19, 6.4.13-T HW Score: 44%, 8.8 of 20 points Part 1 of 3 Points: 0 of 1 Save When women were finally allowed to become pilots of fighter jets, engineers needed to redesign the ej...
What would you expect to see if there was a large variance for a sample of difference scores in a repeated-measures t-test? Select one: a. ​ there probably isn't a significant difference between tre...
 . The heights (in inches) of 30 adult males are listed below. A frequency distribution show the frequency and relative frequency using five classes. 70 72 71 70 69 73 69 68 70 71 67 71 70 74 69 68 7...
 . Current Attempt in Progress Read each of the following statements. Assumingthat statistical hypotheses are set up to test them, classify each as a one-tailed or a two-tailed test. a. Maritz Market...
What is the outcome that the researchers are interested in examining? What is the 'exposure' they want to examine? How do the nurse researchers use statistics to indicate a need to examine this exposu...
PROBLEM In a school district the average in a test on X subject is 72 and it is being used a new teaching strategy that has not been tested for effectiveness.   HYPOTHESIS What hypothesis to use.   ...
Please help me with my discussion post. Thank you   In the discussion forum for this week, you will create a scenario that requires the use of a binomial distribution. For your post you will make up ...
 . Question 14 (2 points) Assume that X and Y are Discrete Random Variables with the Probability Distributions given below: 1 2 3 1 0.11 0.01 0.07 X 2 0.46 0.01 0.01 3 0.04 0.16 0.13 What is the prob...
A tire company makes tires that have a normal distribution with a mean of 65,000 miles with a standard deviation of 3000 miles prior to needing replacement. Find the probability that a tire lasts betw...
A tire company makes tires that have a normal distribution with a mean of 65,000 miles and a standard deviation of 3000 miles prior to needing replacement. A tire that wears out after reaching the top...
fuel_type number_of_doors body_style engine_location wheel_base length width height curb_weight number_of_cylinders engine_size bore stroke compression_ratio horsepower peak_rpm city_mpg highway_mpg p...
 . 1. Let X1, X2, ..., Xn be i.i.d. Unif(0, 0) random variables. (a) Show that 01 = "tix(n) and 02 = 2X are both unbiased estimators for 0. (2 points) (b) Find eff(01, 02). (4 points) (c) Show t...
Question 6. Chrome File e Edit View History Bookmarks Profiles Tab Window Help F O ( x 0 Q 8 Wed Mar 8 9:19:07 AM .. . ini National University | Apps D2L 407 Week 2: Quiz - MNS407 M 407 Week 2: Quiz -...
 . 1 de 2 oject #1 Life Expectancy Over the last one hundred years, the life expectancy of both men and women has increased significantly. In this project, you will investigate the trends concerning ...
A tire company makes tires that have a normal distribution with a mean of 65,000 miles with a standard deviation of 3000 miles prior to needing replacement. A tire that wears out in the bottom 4% of m...
 . 1. Let X be a random variable with mean 2 and variance 4. Define S_n = X_1+ X_2+ ... + X_n, where X_i are independent and identically distributed as X. Find the mean and variance of S n.+ 2. Consi...
 . The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randoml...
 . Which statement is true? O any problem in hypothesis testing could be handled through estimation. O any problem in estimation could be handled through hypothesis testing. O hypothesis testing and ...
 . There are two boxes, each containing five balls: 2 black and three white in box1, 1 black and 4 whites in box2. We choose one of the boxes at random (equally likely)- One ball is drawn from the bo...
 . The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randoml...
 . Problem 4 (10 pts) This question asks you to show the bias-variance decomposition of MSE. Assume Y = f(X ) + c. MSE is the mean squared error for estimating f(ro) when To is a specific input. Show...
Table 2 shows some data related to crime in different areas of England. When answering the questions that follow, assume that the rates of offences in each area in the year ending September 2021 are v...
The mean starting salary for nurses is 67,694 dollars nationally. The standard deviation is approximately 10,333 dollars. Assume that the starting salary is normally distributed. Round the probabiliti...
 . A production line at V. J. Sugumaran's machine shop has three stations. The first station can process a unit in 6 minutes. The second station has three identical machines, each of which can proces...
I am convinced that my dice are cursed. I consider rolls of 1,2,3 to be cursed rolls. I predict that I'll have more of these cursed rolls then I should if he 20 sided dice are fair. To test this, I re...
Big Sweets candy company is testing one of its machines in the factory to make sure it is producing more than 96% high-quality candy (Ho: p = 0.96; Ha: p > 0.96; a = 0.05). The test results in a p-...
 . b) A die and a coin. Bob rolls a single six-sided die, and then flips a coin the number of times showing on the die. The coin comes up heads every time. What is the probability that the die showed...
An expert who works for a car magazine obtained random data (rounded to the nearest thousand) among two categories of used or new cars: Domestic and Foreign. The expert would like to understand sales ...
 . In 2016 the Better Business Bureau settled 75% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they receiv...
 . My Courses - alamo.edu X MyLab Statistics All Assignments X Do Homework - Section 9.2 Hom X + V X > C A mylab.pearson.com/Student/PlayerHomework.aspx?homeworkld=641 186334&questionld=8&...
 . 2. [10 marks] Suppose that U and V are independent Exponential random variables with mean and variance equal to 1. Define X = (U U +V - V Then for some vector / and 2 x 2 matrix A, X = / + AY = / ...
Gambling is an area in which probability plays a big role.  Certainly, professional gamblers and anyone who wants to make money is aware of the probabilities related to their activity of choice. Plea...
 . 1. [10 marks] Suppose that X = (X1, . .., X;) ~ Ns(u, C) where 55 7 -5 -13 -6 2 7 59 -13 7 and C = -5 -13 19 -5 -13 7 -5 55 -6 -2 -18 -6 60 (a) Let Yi = X1 + X2 + X3 + X, and Y2 = Xs. What is the ...
    Después de leer el módulo, conteste las siguientes preguntas en forma de ensayo (introducción, análisis, conclusión). ¿Qué aprendió nuevo? ¿Qué fue los más que le impactó acerca de l...
 . The following list of variables is associated with student life. Define whether they are: (i) A = Quantitative or B = Qualitative; (ii) A = Continuous, B = Discrete or C = NA (i.e. NA if not Quant...
10. Assume a standard Normal distribution. Draw a separate, well-labeled Normal curve for each part. (a) Find an approximate z-score that gives a left area of 0.7000. (b) Find an approximate z-score t...
A random sample 20 men had their blood glucose levels (mg/100 ml) recorded after a 12 hour fast. The data are displayed in the stem-and-leaf plat below. 1 1 6 3 (al If we let x denote the blood glucos...
I need assistance with Question 77. . 7?. A population has mean 20 and_ variance 9. What 79. If the standard error of the mean is 3, based on a are the mean and variance of X and the standard random ...
Need help with this question . A manager must decide which type of machine to buy, A, B, or C. Machine costs (per individual machine) are as follows: Machine Cost A $60, 000 $50,000 $60, 000 Product ...
 . c) Further given that a = 2%, what is the long term instantaneous forward rate in terms of R? Your answer:. This question examines the behavior when Merrill Lynch Exponential Spline (MLES) d(t) = ...
Finding Sample Mean Probabilities using the TI-84 calculator An unknown distribution has a sample mean of 90 and a standard deviation of 15. Sample sizes of n=30 are drawn randomly from the population...
 . 4. (Consistency for Bernoulli estimation) Suppose that we observe i.i.d. Bernoulli random variables X1, . .., Xn ~ Ber(p). To estimate g(p) = p(1 -p) (which is the variance of Xi), consider the es...
 . 3. (Asymptotic distribution) Consider i.i.d. uniform random variables X1, ..., Xn ~ Unif(0, 0). From what we have learned, it is not hard to see that 01 = 2X(n) is the MVUE of 0 and 02 = X(n) is t...
 . 1. (Admissibility of linear estimators) Consider i.i.d. X1, ..., Xn ~ N(u, ?) where o' is known and u is to be estimated under the squared loss. Prove that the linear estimator / = ax + b of u is ...
Conrad's Cakes specializes birthday cakes. A birthday cake costs $25 each to make and sells for a price of $35 for the next two days while it is still fresh. All cakes not sold during the first two da...
Military radar and missile detection systems are designed to warn a country of enemy attacks. A reliability question deals with the ability of the detection system to identify an attack and issue the ...
 . Exercise 4 (25 points). We say that X has a Fisher distribution, denoted by F(n1, n2), if we have Ki/ni X = K2/n2 where Ki ~ Xn, and K2 ~ Xn, are two independent r.v.s and the n;'s are degrees of ...
Shauna applies for a job at a company that offers new hires a mean salary of $41,000, and the standard deviation is $10,000. If Shauna gets hired, what is the probability TedC2 Industries will offer h...
1. Which graphic representation could a researcher use to help determine if a continuous variable  followed a normal distribution? a. Bar chart  b. Pie chart c. Box and Whisker Plot d. Histogram and...
 . Current Attempt in Progress The average total dollar purchase at a convenience store isless than that at a supermarket. Despite smaller-ticket purchases, convenience stores can still be profitable...
Worksheet 1 Sample Space & Probability. B. Solve for the following. 5. Given a 52-standard deck of cards. Find the probability of getting: a. A Jack b. 4 hearts c. An Ace d. At least 3 diamonds 6....
I need help answering these questions    1. Define p-values and explain your understanding of them.  List any questions you might have   2. Explain your understanding of the limitations on using p...
1. The term "p roulette" refers to the idea that A. researchers do not know what they are testing and should play Russian Roulette. B. doing research is a lot like a guessing game C. there is no conce...
B) t (ask for degrees of freedom). E O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Hypothesis test for the population mean: t test D 3/5 An electronics manufacturing process has a scheduled mean compl...
 a hand drawn box and whisker plot for the following data (rulers and scales are required). Show  calculations  for the  quartiles ,  mean ,  standard deviation  and  90th percentile .   75, ...
8 points) Interaction and confounding in the literature (W) Read the article by Zhang et al (2011). The authors investigated the relationship between prenatal lead exposure and blood pressure in child...
Correlations   gpa motscore gpa Pearson Correlation 1 .684 ** Sig. (2-tailed)   <.001 N 45 45 motscore Pearson Correlation .684 ** 1 Sig. (2-tailed) <.001   N 45 45 **. Correlation is signifi...
17% of US citizens believe that getting vaccinated against COVID-19 will result in the inability to have children*. If 58 US Citizens are randomly selected, answer the following: Justify what type of ...
Sepal length Sepal width Petal length Petal width Species 7.1 3 5.9 2.1 Iris-virginica 6.3 2.9 5.6 1.8 Iris-virginica 6.5 3 5.8 2.2 Iris-virginica 7.6 3 6.6 2.1 Iris-virginica 4.9 2.5 4.5 1.7 Iris-vir...
 . Suppose X1, Xn are an i.i.d. sample from a distribution with density fx (x) Axt! for x E (-1, 1 ) and A E (-1, 1). 2 Consider the estimator 3X. Is it a biased estimator for 1? Is it a consistent e...
 . Ch. 1. What is Multivariate Analysis? Vectors and Linear Transformations . What is the dot product of (1 2 3) and ( 1 1 -1 )7 (A) 0 (B) 3 (C) 6 (D) 9 . What is the dot product of (1 2 3) and ( 1 1...
AGGRAVATED ASSAULT IN LOS ANGELES AND NEW YORK   Write an introductory statement about measuring crime, specifically the index crime of your choice.  Explain why it is important for residents to kno...
AGGRAVATED ASSAULT IN LOS ANGELES AND NEW YORK   Write an introductory statement about measuring crime, specifically the index crime of your choice.  Explain why it is important for residents to kno...
Based on the data provided about reading in  black color and reading different color other than black , will you conclude that reading in a different color other than black takes less time at 5% leve...
Use the data in MLB1 for this exercise and the fitted model:  𝑙𝑜𝑔(̂𝑠𝑎𝑙𝑎𝑟𝑦) = 11.19 + .0689𝑦𝑒𝑎𝑟𝑠 + .0126𝑔𝑎𝑚𝑒𝑠𝑦𝑟 + .00098𝑏𝑎𝑣𝑔...
Normal Approximation Assume that 12% of the U.S. population have worked in a family business. In a sample of 100 Americans, find the probability that at least 15 have worked in a family business. Use ...
 . According to Global Research News, 3/4 of all rough diamonds produced in the world are NOT blood diamonds. (Any diamond that is mined in a war zone in order to finance a warlord's activity is cons...
Describe what you are comparing. State your hypothesis in a sentence. Indicate the appropriate t-test that you will use to evaluate your hypothesis. State the alpha (α) level.Compare two different co...
             Pearson Correlation This the most important assumption in regression. While it is perfectly fine to have correlations across your variables (shown in blue below), you should not ha...
Consider randomly selecting a student at a Universal University, and let V denote the event that the selected individual has a Visa credit card and M be the analogous event for a MasterCard. Suppose t...
 . 3. Atrucking company determined that the distance traveled per truck per year is normally distributed, with a mean of 50 thousand miles and a standard deviation of 11 thousand miles. Complete pans...
     . The following figure is from the website of a US national environmental laboratory. It displays sample mean concentrations, with 95% confidence intervals. of three radioactive substances. Th...
Math 110: Section 10.5 Homework Name: (Adapted from The Heart of Mathematics, 4th ed., by Burger and Starbird.) In the I-cut, you choose method, would you rather be the cutter or the chooser? Which r...
Here are summary statistics for the weights of Pepsi in randomly selected cans: n = 36, x = 0.82407 lb, s = 0.00574 lb. Use a co level of 90% to complete parts (a) through (d) below. E = .00167 10 (Ro...
Please help me! I am struggling with statistics right now. Please provide step by step explanations so I can understand and revisit this question when it is time to review for my midterm exam. Thank y...
Please help me! I am struggling with statistics right now. Please provide step by step explanations so I can understand and revisit this question when it is time to review for my midterm exam. Thank y...
Please help me! I am struggling with statistics right now. Please provide step by step explanations so I can understand and revisit this question when it is time to review for my midterm exam. Thank y...