Statistics and Probability questions and answers in April 2023

Help. Question 17 4 pts We intend to estimate the average driving time of a group of commuters. From a previous study, we believe that the average time is 42 minutes with a standard deviation of 14 mi...
   . 4/25/23, 3 47 PM 78682236 (2043-2723) statistics Exam # 3 Pg 3 1 A survey of 100 guests at a wedding follows regarding cola, coffee and tea drank at The end of a wedding, The drinks contain sug...
 . Which of the following can be learned from a scatter plot? Check all that apply. Whether or not there is a curved relationship between the two variables. Whether or not a change in one variable ca...
You are interested in finding a 95% confidence interval for the average number of days of class that college students miss each year. The data below show the number of missed days for 11 randomly sele...
Please help! Need correct answer for P-value.  . Suppose ,u1 and ,u2 are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking systems. Use th...
Help. Question 10 6 pts You wish to test the claim that u = 50 at a level of significance of a = 0.05 and are given sample statistics n = 11, a = 52, and s = 17. Compute the value of the standardized ...
Help. Question 9 Given Ha: H > 40 and p-value = 0.0491. Do you reject or fail to reject Ho at the a = 0.01 level of significance? Reject HO. Not sufficient information to decide. O Fail to reject H...
 . Time Taken:0:14:44 Dhuha Hameed: Attempt 1 Memorial Hospital's I UP 10 MS-UKGS MS-DRG MS-DRG Description Patient Volume CMS RW 470 Major joint replacement or reattachment of lower extremity 2,750 ...
Help. Question 18 4 pts A local men's clothing store is being sold. The buyers are trying to estimate the percentage of items that are outdated. They will choose a random sample from the store's inven...
A botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 74 specimens and counts the number of seeds in each. Use her sample results (mean = 40.4, standard deviation ...
 . 474 485 501 Arfl 5 July 5 Au- st 6 6 6 October Armed only with his fingers, the owner decides that the safest forecasting approach is a 88 79 73 79 08 99 732 732 moving average of two periods. G...
Please write to text format answer   . 1. Let X and Y be random variables whose joint probability density function is given by 8xy, 0<x<y,0<y<1, f(x) = 10, otherwise. Find the covariance...
Assume that a sample is used to estimate a population mean �. Find the 95% confidence interval for a sample of size 540 with a mean of 49.6 and a standard deviation of 8.5. Enter your answer as a tr...
Question 17 options: The average amount of a beverage in randomly selected 16-ounce beverage can is 16 ounces with a standard deviation of 0.4 ounces. If a random sample of sixty-four 16-ounce beverag...
. Consider an experiment that firstly involves rolling a fair seven-sided die once and then secondly rolling a fair five-sided die once. Let X denote the number rolled on the first roll and let Y deno...
Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 101 cookies and finds that the number of chocolate chips per cookie in the...
Shapiro-Wilk Test for life.expectancy. Run the Shapiro-Wilk Test for life.expectancy. Does it appear that this variable is normally distributed? (a) Report your code. (b) Provide your test results as ...
 . The American black bear (Ursus americanus) is one of eight bear species in the world. It is the smallest North American bear and the most common bear species on the planet. In 1969, Dr. Michael R....
 . ## y y. hat residuals squared . residuals ## 1 17 17. 113554 -0. 1135541 0. 01289453 ## 2 12 13. 059338 -1.0593377 1. 12219647 ## 3 12 12.322208 -0.3222075 0. 10381768 ## 4 7 8. 636556 -1. 6365563...
 . A fictitious randomized clinical trial on the effectiveness of a new treatment to treat a disease refractory to standard treatments has been carried out. In this study, the authors determined the ...
Assume that a sample is used to estimate a population mean. Find the 95% confidence interval for a sample of size 891 with a mean of 51.6 and a standard deviation of 6.7 Enter your answer as a tri-lin...
 . It's believed that as many as 24% of adults over 50 never graduated from high school. We wish to see if this percentage is the same among the 25 to 30 age group. What sample size would allow us ...
 . Vitamin D, whether ingested as a dietary supplement or produced naturally when sunlight falls upon the skin, is essential for strong, healthy bones. The bone disease rickets was largely eliminated...
Statistics Chapter 11: Performance Task  Role: Sports Writer for the School Newspaper   Audience: High School Students   Format: School Newspaper Article   Topic: A Stain on Freddie's Record? ...
 . A 3-D Pie Chart. It can be difficult to estimate the relative size of sectors in a pie chart. When it is drawn in 3-D it can be even harder. What percent of the pie chart do you think is represent...
Anystate Auto Insurance Company took a random sample of 386 insurance claims paid out during a 1-year period. The average claim paid was $1580. Assume 𝜎 = $246. Find a 0.90 confidence interval for ...
Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout, leukemia, or lymphoma.† Over a period of months, an adult m...
 . A card is selected at random from a standard deck of 52 playing cards. Find the probability of each event. (a) Randomly selecting a red suit or a king (b) Randomly selecting a spade or a 3 (c) Ran...
How do I solve this using Excel? Step by step.   An advertisement in the newspaper offers a new car for sale or lease. The purchase price of the car is $43,240, or the car can be leased for 24 months...
The test statistic of z=1.59 is obtained when testing the claim that p≠0.804. a. Identify the hypothesis test as being​ two-tailed, left-tailed, or​ right-tailed. b. Find the​ P-value. c. Usin...
Hide student question Time Left :     01:58:15   Student question     1. In a study of heart rate in ocean‑diving birds, Dr. Elliot Reed harnessed 10 randomly sampled, wild‑caught cormorants ...
An automobile manufacturing plant produced 35 vehicles today: 12 were vans, 9 were motorcycles, and 14 were sedans. (Each vehicle falls into only one of these categories.) Plant managers are going to ...
 . Let vector X ~ N(0, In) in R". Let also y E R" be a non-random vector s.t. ly = 1. (a) Find probability distribution of t = "X. (b) Find probability distribution of the quadratic fo...
 . (a) Let X1, X2, ..., Xn be i.i.d. random variables (taking their values in R) with unknown c.d.f. F(x). Find MVUE of P(0 < X < 1) where X has the same c.d.f. as Xj. Use the following approac...
i need help solving with step by step answers please  . Data is fictitious. 1. Educators suspect that students with inadequate sleep commit more random "silly" mistakes on math exams. A pro...
We are interested in the structural model Y=X′β+e but where E[Xe]≠0 and lets consider we have access to an l×1 vector of instruments Z and the condition is l>k where dimensions of X is k. the...
RStudio: Answer and explain the following problem. In the link, you could access the files needed for these problems. What are the codes? Please read the following instructions in the image provided. ...
 . A researcher ran a study looking at whether students who wore an invisibility cloak engaged in more mischief than those who did not. Below is the output. Write up the formal statistical result as ...
Use technology to help you test the claim about the population mean, μ, at the given level of significance, α, using the given sample statistics. Assume the population is normally distributed. Claim...
 . A Question 9 4 pts The Philadelphia Zoo reports that the mean life span of Galapagos tortoise is 100 years. Assume that their life span follows a normal distribution with a mean of 100 years and a...
 . p ERS # 0 words D Question 7 8 pts A recent article in the paper claims that government ethics are at an all-time low. Reporting on a recent sample, the paper claims that 41% of all constituents b...
The average math SAT score is 512 with a standard deviation of 112. A particular high school claims that its students have unusually high math SAT scores. A random sample of 50 students from this scho...
Each set of numbers describe data on serious anti-social behaviors observed among 12 youth after receiving one of two interventions.  I will show you how to find the standard deviation for interventi...
 . (4 points) One of the ANOVA tables gives the test for whether x3 can be dropped from the model that also includes x1, X2 (but not x4). Give the test statistic F*, the p-value (no calculations need...
Health insurers and the federal government are both putting pressure on hospitals to shorten the average length of stay (LOS) of their patients. The average LOS in the United States is 4.6 days (Healt...
 . TRUE OR FALSE of the following statements and justify your answers. We assume the simple linear model for the following questions. Yi = Bot BIXitci, i= 1,2...,n (a) The 95% confidence interval of ...
How can I do maximum likelihood estimation (MLE) for the lambda parameter of a poisson distribution when I have a set of total results and total errors. I Let's say I know I have 50 trials with 10 err...
Instructions: All three questions in this assignment should be answered using STATA simulation of random numbers. Question 1: Suppose a stock market can go up with a probability 0.60 and can go down w...
 . 13:56 28 Done Descriptive Statistics Research p... Switch To Light Mode Descriptive Statistics Research paper Instruction 1. All answers must be placed on the answer sheet 2. Show all workings whe...
Five hundred consumers were surveyed about a new brand of snack food, Crunchicles. Their age groups and preferences are given in the table. 18-24 25-34 35-55 55 and over Total Liked Crunchicles 32 19 ...
The spinner below is spun twice. If the spinner lands on a border, that spin does not count and spin again. It is equally likely that the spinner will land in each of the six sectors. BLUE RED RED BLU...
I ONLY NEED LETTER D, E AND H ANSWERED   thank you. l. [25 pts total] A researcher was interested in whether an individual's interest in politics was related to their level of education, biological s...
The Kelley Agency is planning to produce ads for the whole season of a new reality show.  They sell these ads to their customers throughout the season, as and when a customer requests for them subjec...
Answer b please. A random sample of n = 81 observations is drawn from a population with a mean equal to 20 and a standard deviation equal to 18. Complete parts a through e. a. Find the probability tha...
Answer b please. Save Suppose a random sample of n = 326 measurements is selected from a binomial population with probability of success p. For each of the given values of p, give the mean and standar...
A binomial experiment with probability of success p = 0.37 and n - 11 trials is conducted. What is the probability that the experiment results in more than 1 success? Do not round your intermediate co...
In a completely randomized design, 18 experimental units were used for the first treatment, 19 for the second treatment, and 20 for the third treatment. Complete the following analysis of variance. (R...
  ?. Use the sample data and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2312 subj...
The following data are from a completely randomized design.   Treatment A B C   162 142 125 141 156 123 166 124 138 145 141 141 148 136 150 174 147 133 Sample mean 156 141 135 Sample variance 174.0 ...
A random sample of n = 49 observations is drawn from a population with a mean equal to 24 and a standard deviation equal to 14. Complete parts a through g below. a. Give the mean and standard deviatio...
 . Ocean currents are important in studies of climate change, as well as ecology studies of dispersal of plankton. Drift bottles are used to study ocean currents in the Pacific near Hawaii, the Solom...
Which statistical test should be run to compare a group at two different points in time?   a) t test: two sample assuming equal variances. b) t test: two sample assuming unequal variances. c) t test:...
In a​ study, researchers wanted to measure the effect of alcohol on the hippocampal​ region, the portion of the brain responsible for​ long-term memory​ storage, in adolescents. The researcher...
The average math SAT score is 520 with a standard deviation of 114. A particular high school claims that its students have unusually high math SAT scores. A random sample of 50 students from this scho...
Consider the following hypothesis test:   H_0: µ <= 25   H_a: µ > 25 A sample of size 81 provided a sample mean of 24.85 and (sample) standard deviation of 0.5. Blank #1: Compute the value o...
The lengths of lumber a machine cuts are normally distributed with a mean of 104 inches and a standard deviation of 0.3 inch. ​(a) What is the probability that a randomly selected board cut by the m...
Consider the following hypothesis test:   H_0: µ <= 55   H_a: µ > 55 A sample of size 25 provided a sample mean of 54.9 and (sample) standard deviation of 0.3. Blank #1: Compute the value of...
Please assist with correct answers. Please provide Rguroo Graph image please.    . Question 4 5 pts A 500 page book contains 250 sheets of paper. The thickness of the paper used to manufacture the b...
ineed help answering this!. You wish to test the following claim (Ha) at a significance level of a = 0.002. Ho : p = 0.38 Ha : p + 0.38 You obtain a sample of size n = 604 in which there are 259 succe...
 . Question 6 Not yet answered Marked out of 2.00 Flag question A trucking company keeps track of the number of miles each of its drivers logs each week. The scatterplot below shows the relationship ...
a. What should be the dependent variable, Y in this study? Salary or GPA?   b. What should be the independent variable, X in this study? Salary or GPA? c. Estimate the regression equation relevant fo...
 . Dorothy Kelly sells life insurance for the Prudence Insurance Company. She sells insurance by making visits to her clients homes. Dorothy believes that the number of sales should depend, to some d...
You are testing the claim that the proportion of men who own cats is smaller than the proportion of women who own cats. You sample 100 men, and 45% own cats. You sample 180 women, and 50% own cals. Fi...
Find the probability in each case a N = 3; n = 40; u = 74 and, σ = 6; P( x̄ <75.0)=  b. N = 80; n = 37n = 107 and, σ = 3.52; P(106< x̄ <106.4)=  c. N = 255; n = 100; u = 35.1 , σ = 4.8...
   . A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1545 and the standard deviation was 311. The test scores of four students selected at random are...
Consider the sample regression equation:  y = 12 + 2x 1  - 6x 2  + 6x 3  + 2x 4 When  x 2 increases 2 unit and  x 3  increases 2 units, while  x 1  and  x 4  remain unchanged, what chang...
The following data represent the asking price of a simple random sample of homes for sale. Construct a 99​% confidence interval with and without the outlier included. Comment on the effect the outli...
researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 95​% confidence i...
 . In an effort to counteract student cheating, the professor of a large class created several versions of a midterm exam, distributing the versions equally among the students in the class. After the...
 . The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "What is the highest level of education...
 . LLD Records is a store that specializes in old-fashioned vinyl records. Some of the store's market research of college students is done during promotions on college campuses, while other market re...
1.  2.  3.   . Find the area of the shaded region under the standard normal curve. O Click here to view the standard normal table. Z = 1.65 The area of the shaded region is (Round to four decimal ...
Which of the following pairs of hypotheses are used to test if the mean of the first population is larger than the mean of the second population, using independent random sampling? Group of answer cho...
A consumer magazine wants to figure out which of two major airlines lost a higher proportion of luggage on international flights. The magazine surveyed Standard Air (population 1) and Down Under airli...
 . information for 14 females. Modern medical practice tells us not to encourage babies to become too fat. Is there a positive correlation between the weight x of a 1-year old baby and the weight y o...
Compute the critical value zα/2 that corresponds to a 91​% level of confidence.     Question content area bottom   Part 1   zα/2=enter your response here   ​(Round to two decimal places as?...
Using derivation that proves each of the following arguments is deductively valid. Derivation must include a proof column and a justification column.   using rules of: modus Ponens, modus tollens, di...
Problem #5 Let X denote the 'transpiration' (ml/h) and Y denote the corresponding ammonium concentration(mg/L) 5 points Data collected from an experiment is given as follows. The data is given as foll...
 . A researcher knows that in spite of the yellow flashing lights and signs announcing "school zone, 20 mph", drivers in front of Elementary School B proceed at a mean speed of 22 mph. The ...
 . A researcher on Chicago's west side wishes to determine the relationship between the air temperature and the number of fire hydrants opened illegally on the west side. The researcher gathers the d...
A population proportion is 0.57. Suppose a random sample of 655 items is sampled randomly from this population -  a. What is the probability that the sample proportion is greater than 0.58 ?  b. Wha...
4. Use the sample data in the table bellow to answer questions. X 10 2 4 XY 6 11 1 3 7 2 9 6 5 4 8 Calculate SSX, SSy and SSxy. Determine regression equation for the data. (the least square line): Cal...
 . 2. In the Dark Ages, Harvard, Dartmouth, and Yale admitted only male students. Assume that, at that time, 85 percent of the sons of Harvard men went to Harvard and the rest went to Yale, 35 percen...
Answer a-c thank you. Suppose a random sample of n measurements is selected from a binomial population with probability of success p = 0.14. For each of the following values of n, give the mean and st...
Question content area top   Part 1   Compute the critical value zα/2 that corresponds to a 93​% level of confidence.         Question content area bottom   Part 1   zα/2=enter your respons...
 . Hint(s) Check My work (1 remaining) A certain brand of microwave oven was priced at 10 stores in Dallas and 13 stores in San Antonio. The data follow. Use < = 0.05 level of significance and tes...
Determine the point estimate of the population​ proportion, the margin of error for the following confidence​ interval, and the number of individuals in the sample with the specified​ characteri...
The annual salaries for people in a particular profession are known to be normally distributed with a mean of $54 What percentage of people in this profession earn annual salaries between $54,000 and ...
Suppose a simple random sample of size n=200 is obtained from a population whose size is N=15,000 and whose population proportion with a specified characteristic is p=0.6.   Determine the mean of the...
The mean time between failures for a Telektronic Company radio used in light aircraft is 420hours. After 15 new radios were modified in an attempt to improve reliability, tests wereconducted to measur...
Part of an ANOVA table is shown below. Source of Variation Sum of Squares Degrees of Freedom Mean Square F Between         Treatments 180 3     Within         Treatments         ( Error)...
Consider the following hypothesis test:   H_0: µ <= 25   H_a: µ > 25 A sample of size 81 provided a sample mean of 24.85 and (sample) standard deviation of 0.5. Blank #1: Compute the value o...
 . myopenmath.com It is a common belief that SUVs are safer than cars. In a collision, does an SUV sustain less damage (cost of repair) than a car? SUV into Car SUV Damage Car Damage ($ ($) Honda CR-...
1.   What is the proportion of coins that landed on a head?           a. What is the proportion of nickels that landed on a tail?                       b. What is the prop...
Which of the following is true about a Frequency Plot?   Contains upper control limits and lower control limits Allows you to differentiate between normal variation and out of control points Identifi...
plz ll  . Find the minimum sample size n needed to estimate p for the given values of c, o, and E. c = 0.95, 6 =9.6, and E = 2 Assume that a preliminary sample has at least 30 members. n= (Round up t...
1. Observational studies suggest that moderate use of alcohol reduces heart attacks, and that red wine may have special benefits. One reason may be that red wine contains polyphenols, substances that ...
 . Use this information for the next five questions. Washington Post columnist Sally Jenkins described an anecdote about golfer Tiger Woods' ability to detect subtle differences in golf equipment ba...
 . 4. Records of 40 used passenger cars and 40 used pickup trucks (none used commercially) were randomly selected to investigate whether there was any difference in the mean time in years that they w...
 . 3. In order to investigate the relationship between mean job tenure in years among workers who have a bachelor's degree or higher and those who do not, random samples of each type of worker were t...
 I need help with my assignment this week. I have been struggling with this weeks information. All of the questions i need to answer are included in the photo. My research question is  "Is the mean ...
 . Use this information for the next five Questions: A grocery store buys cantaloupes from two different farmers. They take a random sample of 64 of these melons from each of the farms. The cantaloup...
    No chatgpt . Match aach P-valua with the graph that displays its area without performing any calculations. Explain your reasoning. P = 0.03013 and P = 0.3271. Q q E Graph El displays the area f...
No chatgpt . In a large clinical trial, 401,041 children were randomly assigned to two groups. The treatment group consisted of 200,442 children given a vaccine for a certain disease, and 26 of those...
 . Take Quiz Exit Question 12 0.5 pts What is the test statistic when we run a t-test? Or OF OP O t Question 13 0.5 pts "A significant effect of therbomidine on remission rates, t(734)=2.15, p =...
Question 4 Suppose a study reports that the average price for a gallon of self-serve regular unleaded gasoline is $3.16. You believe that the figure is higher in your area of the country. You decide t...
Question 6 To answer this question, use the Data Analysis ToolPak in Excel and select "t-Test: Two-Sample Assuming Equal Variances" from the list of available tools. Conduct a hypothesis test using th...
The table shows the number of points scored and number of wins in conference play for college football teams in the SEC during 2017. Using technology, construct a scatterplot to display the relationsh...
The manager of a computer retails store is concerned that his suppliers have been giving him laptop computers with lower than average quality. His research shows that replacement times for the model l...
1. Use the following codes to obtain a table. Data1 <- read.table("Data1.dat",header = TRUE) Tab1 <- aggregate(Data1$Count, by=list(Level=Data1$Level, Male=Data1$Male, LD=Data1$LD), FUN=sum) nam...
No chatgpt . Consider the following partially completed two-way ANOVA table. Suppose there are four levels of Factor A and three levels of Factor B. The number of replications per cell is 5. Use the ...
Bivariate data for the quantitative variables x and y are given in the table below. These data are plotted in the scatter plot shown next to the table. In the scatter plot, sketch an approximation of ...
Consider the following data: 2 4 15 P(X = x) 0.1 0.2 0.3 0.2 0.2 Step 1 of 5: Find the expected value E(X). Round your answer to one decimal place AnswerHow to enter your answer (opens in new window) ...
 . The manufacturer of a certain brand of cereal puts a coupon for a free box of cereal in 20 percent of its boxes. If 9 boxes are purchased, what is the probability of obtaining at least 1 coupon? G...
 . Problem 1. Fifteen adult males between the ages of 35 and 50 participated in a study to evaluate the effect of diet and exercise on blood cholesterol levels. The total cholesterol was measured in ...
Here is the residual plot produced by the least-squares regression line relating y = number of wins to x = number of goals scored by NHL teams in 2008.  Use the residual plot to determine whether the...
Use Association Rule Mining to conform the data. Provide step by step analysis.. Question 1: Apriori Tid Algorithm Homework Please use Apriori Tid algorithm to find all the frequent item sets with Min...
 . Let the random variable Z follow a standard normal distribution. e. Find P(1.06 < Z < 1.73). X a. Find P(Z < 1.06). Standard Normal Distribution Table b. Find P(Z > 1.73). f. Find P( -...
This problem is related to "Model 9-2: Pizza Take-out Model" described in Section 9.2 of the textbook. While you don't need to know the details of how the model is "coded" in Simio to be able to solve...
3)i need the part b answer for this question       4)   5)      . Listed below are the numbers of words spoken in a day by each member of eight different randomly selected couples. Complete par...
Not all visitors to a certain company's website are customers. In fact, the website administrator estimates that about 10% of all visitors to the website are looking for other websites. Assuming that ...
Suppose that we've decided to test Clara, who works at the Psychic Center, to see if she really has psychic abilities. While talking to her on the phone, we'll thoroughly shuffle a standard deck of 52...
In a recent court case it was found that during a period of 11 years 884   people were selected for grand jury duty and 39 ​%  of them were from the same ethnicity. Among the people eligible for g...
 . A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year, monitoring the progress the students made toward completing a bachelor...
Need help please. Quiz #3 Question 13 of 15 This quiz: 15 point(s) possible This question: 1 point(s) possible Submit qui A study was conducted to determine the proportion of people who dream in black...
 . Assume that the differences are normally distributed. Complete parts (a) through (d) below. Observation 1 2 3 4 5 6 7 8 Xi 50.5 47.7 51.7 42.0 50.8 44.0 51.6 52.8 Yi 52.4 47.1 53.1 45.8 50.2 48.1 ...
 . A survey asked, "How many tattoos do you currently have on your body?" Of the 1216 males surveyed. 187 responded that they had at least one tattoo. Of the 1007 females surveyed, 138 resp...
 . A manager has available a pool of 15 employees who could be assigned to a project-monitoring task. 3 of the employees are women and 12 are men. 2 of the men are brothers. The manager is to make th...
In simple linear regression analysis (where y is a dependent and is an independent variable).if the y INterCept Is NEGATIVE. A.if x increases, y must also increase B.the value of y is positive when x=...
5)     6)   7)   9)   Male Female 28,070 19,368 14,086 24,961 5,455 4,651 27,560 19,266 24,477 11,380 7,403 16,792 19,614 13,475 19,091 20,297 27,003 15,322 23,392 17,249 9,880 15,815 11,169 11,1...
8)   Reported Measured 150 149.3 114 111.3 267 268.7 122 124.8 138 129.9 300 316.6 216 220.2 200 189.6 107 107.1 190 212.5 161 160.9 176 172.0 160 166.7 235 242.9 250 303.6 180 170.6 158 155.4 135 13...
1. Consider a binomial random variable when the number of trials is 9 and the probability of success on each trial is 0.43. Find the mean and standard deviation of this random variable.   2. Define "...
4. A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug considered standard care and to a placebo. Pregnant women are enrolled and ra...
 . Save A random sample of 862 births included 429 boys. Use a 0.05 significance level to test the claim that 51.3% of newborn babies are boys. Do the results support the belief that 51.3% of newborn...
 . A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed below are the amounts of mercury (ppm) found in tuna sushi sampled at different stores in a maj...
3. The following are body mass index (BMI) scores measured in 12 patients who are free of diabetes and are participating in a study of risk factors for obesity. Body mass index is measured as the rati...
2. A researcher suspects that the actual prevalence of depression among children and adolescents is higher than was previously reported. The previously reported prevalence for depression among childre...
 . A bruinlearn.ucla.edu C + *Course Hero MOU Quiz 4 UCLA Announcements: 23S-POL SCI-60-LEC-1 Ethics and G. G A study recruited 1000 people to participate in a weigh. UCLA = 235-STATS-10-LEC-2 / 235-...
1. A new drug to treat psoriasis has been developed and is in clinical testing. Assume that those individuals given the drug are examined before receiving the treatment and then again after receiving ...
  CNNBC recently reported that the mean annual cost of auto insurance is 1024 dollars. Assume the standard deviation is 230 dollars, and the cost is normally distributed. You take a simple random sam...
The 2019 Australian federal election held on Saturday 18 May 2019 was won by the Liberal-National Coalition with a 51.5% majority. Assuming that voting intentions have not changed, if we now choose a ...
The time it takes to process phone orders in a store is normally distributed, where the mean is unknown, but the standard deviation is 2 minutes.  What is the value of the mean, if you are told that ...
In a recent election, there were 1000 eligible voters. They were asked to vote on two issues, A and B. The results were as follows: 100 people voted for A, 500 people voted for B, and 75 people voted ...
Suppose that you are thinking about buying a car and have narrowed down your choices to two options.The​ new-car option: The new car costs ​$28,000 and can be financed with a three​-year loan at...
Do I use chi-square, t-test, or Mann Whitney U to test my hypothesis of:  the relationship between social media usage and the psychological well-being of individuals. The hypothesis predicts that tho...
A store analyzed a sample of its recent sales and recorded the value of the sale and the method of payment. The results are summarized in the following table:   Show basic workings. Answers may be le...
A biomediacl manufacturing process has only 15% chance of producing a commercially successful result. The probability the 5th attempt at the process will be the first commercially successful one is ??...
A biomedical manufacturing process has only 15% chance of producing a commercially successful result. The probability the 5th attempt at the process will be the first commercially successful one is ? ...
Don't use chatgpt ,👎. The accompanying table shows a portion of data that refers to the property taxes owed by a homeowner (in $) and the size of the home (in square feet) in an affluent suburb 30 ...
 . The random variable X has a uniform distribution with values between 11 and 15. What is the mean and standard deviation of X? (Round your answer to three decimal places.) Select the correct answer...
Two components of a system operate independently. The probability that each specific component fails is 0.05. Find the probability that a. at least one component functions properly. b. the second func...
1. Mr. Smith, the general manager of Smith Math and Reading, claims that their new their AIM2Pass Math workshop helps students better their grades. The following data represent grades on exam before a...
A student did the first three STAM4000 Practice Quizzes only one time each, and scored the following marks:  Practice Quiz 1 Practice Quiz 2 Practice Quiz 3 3 2 3 What is the value of the variance fo...
Attached is a dataset containing information about 156 countries throughout the world.  Some of the data were gathered from the World Bank Data Archives.  Current Coronavirus data were obtained from...
  Variable Definition Quiz 1 number of correct answers GPA Previous grade point average Total Total number of points earned in class Test number of correct answers   Name the four variables used in ...
A study was conducted to explore the association between the heights of young men in secondary school and being bullied at school. "Short" was defined as having a height less than the 5th percentile ...
Please answer the first blank one. Thank you.. Normality check for sampling distribution of sample proportions Find the mean of sample means, Pp The mean of the sample, mean isthe same Find the standa...
Please help!  . Suppose ,u1 and ,u2 are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking systems. Use the two—sample ttest at signific...
 . The following model is a simplified version of the multiple regression model used by Biddle and Hamermesh (1990) to study the tradeoff between time spent sleeping and working and to look at other ...
Use the article, Predictive Power of 8th Grade Students' Translating Among Multiple Representations Skills on their Algebraic Reasoning to answer the following questions: Did the authors display the d...
a) Based on the information available to you in Table 1 above, the "Substance Initiated" items (left-most column) all have a statistically significant adjusted odds ratio for "Parental Monitoring" (ne...
Do your Smart Alex tasks Ch. 10  #1-4 (submit your graph from #2 as an attached .pdf) and whenever applicable, include the relevant statistical results to support your conclusions (always answering...
1. Starting from a random place on a list, Sharon chooses every 50th person to be in her sample. What type of sample is she choosing? 2. Emilio decides to create a sample that is 60% undergraduate and...
 . Multiple Choice 1. A researcher is conducting a study to determine the mean trough dosage of medication for a population. Assuming a previous study was conducted for the same medication and the me...
Show work please!! Thank you. K An information systems organization conducts an annual survey of cybersecurity at firms from around the world. In a recent year, the organization sent survey questionna...
Please answer a-d with work, thank you!!. Calculate the percentage of the population sampled and the finite population correction factor for each of the following situations. a. n= 1,600, N = 6,400 b....
 . 1. Suppose 20% of the students in UCR commute to school every day. Among those who commute, 40% of them had Blue parking permits. If you randomly select a student in UCR, what's the probability ...
Please help!  . Do teachers find their work rewarding and satisfying? An article reports the results of a survey of 393 elementary school teachers and 261 high school teachers. Of the elementary scho...
Answer a-d with work please!. Suppose a random sample of n = 16 measurements is selected from a population with mean u and standard deviation o. For each of the following values of u and o, give the v...
Can someone help me answer this briefly please? Please create the probability tree on the first and last image.   . Balls and Urns T V X Suppose you have an urn that contains 3 red balls and 7 black...
 . DATA DESCRIPTION {A FICTITIOUS DATASET DESIGNED FOR THE ASSIGNMENT ONLY} A consulting firm randomly selected 150 young employees in Tasmania. These selected employees answered questions and under...
Can someone help me answer these briefly?  . Probability #5 T V X What is the probability that a participant is an administrator? You can draw on the table to show your thinking. Submit Importance of...
The Afrobarometer Dataset is used to make a research question that can be answered by multiple regression. Multiple regression is used to answer the following research question: How does the perceptio...
PLEASE HELP ME SOLVE THIS!!. A magazine used the summated rating of 10 restaurants to predict the cost of a restaurant meal. For that data, SSR = 134,345.34 and SST = 140,655.04. Complete parts (a) th...
36.   37.   38.   39.   40. 41.   42.  . You are constructing an 85% confidence interval for an unknown population mean /, where the population standard deviation is o = 9. If you want your erro...
No need to show work, just answers please.   1. 2. 3. 4. 5.  . True or false? If X is a continuous random variable, P(X < k) = P(X < k). O True O False. If X is a continuous variable where P (...
No need to show work, just answers please.   17. 18. 19. 20. 21. 22. 23.  . Use the following information to answer questions 17 - 23. Many college students sell their used calculators once they do ...
No need to show work, just answers please.   24.   25. 26. 27.     28.  . Use the following information to answer questions 25 - 28. The mean of a normally-distributed population is 50, and the s...
     . MS&E 152, Spring 2023 Homework #3 April 25, 2023 I) How many of the following statements violate the Five Rules of Actionable Thought? I. Ludwig is planning to buy an antique in an aucti...
 . A test was given to a group of students. The grades and gender are summarized below A B C Total Male 7 14 5 26 Female 3 17 2 22 Total 10 31 7 48 If one student is chosen at random from those who t...
 . A bag contains 7 red marbles, 5 white marbles, and 6 blue marbles. You draw 4 marbles out at random, without replacement. What is the probability that all the marbles are red? These are very small...
 . 1. Find the joint pdf f3713 (X,,X7,X13) for X,, X,, X, and the autocorrelation Ry (7, 13) . 2. Consider the sum process S = X, +X, + ...+ X . Find the joint pdf to71(2,4,7) for S,, S,, S, at (2,4,...
Answer in steps please!  . A statistics consulting center at a major university analyzed data on normal woodchucks for the university's veterinary school. The variables of interest were body weight i...
A psychological researcher is interested in investigation the relationship between level of happiness and perceived popularity on social media among statistics students enrolled at SACAP. Data were co...
In a study of cell phone use and brain hemispheric​ dominance, an Internet survey was​ e-mailed to 2541 subjects randomly selected from an online group involved with ears. 1171 surveys were return...
On a particular day, a fitness studio had 204 customers. For each, an employee recorded whether the customer was new and what class the customer took. The data are summarized in the table below. Yoga ...
 . Genetics disorder project.doc ClassLink * A ALEKS - Malik Juli < > C a www-awa.aleks.com/alekscgi/x/Isl.exe/10_u-lgNs/kr7j8P3jH-IQid4v-rYPfKBcN M Gmail YouTube Maps News Translate Homework 1...
Skip to Main content Question 1 Question 2 Question 3 Question 4 Question 5 Question content area top   Part 1   The test statistic of z=2.42 is obtained when testing the claim that p>0.7.   wha...
How can these results be interpreted? Examine if the Vader compound scores align with the TextBlob scores and then discuss "Is one algorithm more accurate than the other?      . x AutoSave Off revi...