Statistics and Probability questions and answers in November 2021

What is the Normal Distribution Probability where X is more than 332.96 for a mean of 233, and standard deviation of 90.87  (Please round your answer to 2 decimal places)     Hi, could you please a...
A zoologist was interested in investigating whether non-human primates (NHPs) experience attentional "pop-out"; that is, when you are visually searching for something in a cluttered environment, the o...
A sociologist wanted to investigate how well a person's salary can be predicted by the combination of their intelligence quotient (IQ) and the number of years they have been formally educated. She the...
A self-proclaimed health and wellness company contracted statisticians to examine the efficacy of their newly developed dieting program. They provided the statisticians with data from a publicized wei...
A personality psychologist was interested in examining whether the prevalence of narcissism differed between people based on the type of pet they own: cats, dogs, or exotic pets. She administered a qu...
Question 8 of 11 Question 8 10 points Save Ans A cigarette manufacturer conducted a sample study to determine what proportion ofsmokers smoked flavoured cigarettes. A random sample of 449 smokers cont...
Two different simple random samples are drawn from two different populations. The first sample consists of 20 people with 10 having a common attribute. The second sample consists of 1800 people with 1...
Please I need help to solve these questions based on the data below. Thanks 1- Identify the test statistic t ( round to two decimal places) 2- Identify the p-value (round to three decimal places) 3- w...
The average McDonald's restaurant generates $3.3 million in sales each year with a standard deviation of 0.3. Chance wants to know if the average sales generated by McDonald's restaurants in Hawaii is...
The house brand premium chocolate chip cookie for Sale Mart Supermarket is called Choco-Champs.  The company sells them only in a small pack, claiming in advertisements that this sized package of coo...
1. A mayor running for re-election claims that during his term, average municipal taxes have fallen by $275. A conscientious statistician wants to test this claim. She surveys 37 of her neighbors and ...
Very difficult I'll send one more pic. Week 12: Chapter 9 - 2 Known Standard Deviation Progress saved Done B VOO : Score: 19.13/25 3/5 answered Question 4 7 pts 9 1 95 0 Details ements The average Mcd...
Suppose that a researcher collected a sample of size 15 from a normal population and produced the following 99% confidence interval for the population mean μ, with the population standard deviation k...
Measurements of the distance (in centimeters) between the canine tooth and last molar for 4 wolf upper jaws were made by a researcher. The data are as follows. 9.5, 9.5, 6, 12.2 It is known that the a...
Consider the data set summarized in the R output below.         n     mean    sd 1     5    121.6     9.0 2    9    138.4    19.3 3   17   112.3      4.2 Suppose that we use t...
Consider the data set that is summarized in the R output below.            Df Sum Sq Mean Sq F value Pr(>F)   sample       4      ?       ?    7.38     ?  Residuals   53    ...
In order to estimate the mean incubation time of Covid-19, a researcher collects a sample of 5 people and finds the mean incubation time to be 9.6 days, with standard deviation 2.9 days. Find a 98% co...
The Hal Chase Investment Planning Agency is in business to help investors optimize their return from investment. Hal deals with three investment​ mediums: a stock​ fund, a bond​ fund, and his ow...
An investment fund increases in value by 20% during an economic upturn, decreases in value by 15% during a recession, and increases by 6% during times when it's neither upturn nor recession. The proba...
Standardized Test A scores are normally distributed with mean 150 and standard deviation 30. Standardized Test B scores are normally distributed with mean 1000 and standard deviation 250. Alice scored...
A study randomly sampled 1,358 Canadians and 733 of them reported that they drink a lot of coffee (more than 3 cups a day). Conduct a hypothesis test to check whether 50% of all Canadians drink a lot ...
    Chapter 5 2) Five males with an​ X-linked genetic disorder have one child each. The random variable x is the number of children among the five who inherit the​ X-linked genetic disorder. Det...
Your school district is considering adding a veteran teacher as a "teacher coach," a position your school has never had. A neighboring district uses a teacher coach at one of their campuses. You have ...
Homework: Ch... Question 68, 8.3.26-T HW Score: 56.73%, 97 of 171 points Part 2 of 4 Save Points: 1.5 of 6 The accompanying data table lists the magnitudes of 50 earthquakes measured on the Richter sc...
Suppose you go to bed at 10 PM and wake up at 6 AM and check your email the first thing after waking up. On an average, your inbox receives 65 emails during that period. What is the probability that y...
In a game of chutes and ladders, suppose you need a 2 to win the game. You are rolling a 6-faced fair die. What is the probability that you will win the game in at most 10 tries? (round the answer to ...
An M&M candy dispenser has 20 red, 20 blue, and 20 green M&Ms. The dispenser dispenses 20 M&Ms each time. What is the probability, that on the first use, you will get 8 blue M&Ms out o...
At the carnival, you decided to play the balloon and dart game to pop the balloons with the darts. You are provided 5 darts. Your chance of popping a balloon with a dart is 32%. What is the probabilit...
You want to explore the attitudes of your students toward working in groups. Describe how you would construct a survey to carry out this action research project. Be sure to address the following: The ...
D Question 25 6 pts A baker is deciding how many batches of muffins to make to sell in his bakery. He wants to make enough to sell everyone and no fewer. Through observation, the baker has established...
O population D Question 20 6 pts Legacy fitness center is interested in the mean amount of time a client exercises in the center each week. In this case, the clients that use the fitness center for a ...
D Question 17 6 pts The following table describes the distribution of a random sample S of 100 individuals, organized by gender and whether they are right- or left-handed. Right-handed Left-handed Mal...
D Question 16 6 pts The students in Dr. Water's class have birthdays in each of the four seasons. The following table and bar graph shows the four seasons, the number of students who have birthdays in...
D Question 12 6 pts A supermarket manager is interested in the distances between the supermarket and the warehouse distribution center. She randomly picks up 10 supermarkets and the following data are...
D Question 8 6 pts David volunteers in community events each month. He does not do more than five events in a month. He attends exactly five events 35% of the time, four events 25% of the time, three ...
O 0.09 Question 7 6 pts A is often used to represent a set of data values in which a quantity varies with time. These graphs are useful for finding trends. O histogram O pie graph O line graph O bar g...
Question 2 6 The switchboard in a Dallas CPA firm gets an average of 5.5 incoming phone calls during the noon hour on Mondays. Let X = the number of calls received at noon. What is the probability tha...
Question 1 The following table shows a random sample of pianists and how they learned to play the piano. Gender Self-taught Studied in School Private Instruction Total Female 12 38 22 72 Male 19 24 15...
Some states allow online gambling. As a marketing Manager for a casino, you need to determine the percentage of adults in those states who gamble online. How many adults must you survey in order to be...
The following graph shows the square footage (in 1,000 feet squared) of houses in a certain area. X 0 0.5 1 15 2 25 3 35 4 45 5 The distribution can be written as X - U(1.5, 4.5) and f(x) = 1/3 for 1....
In a repeated-measures ANOVA, the total variance is comprised of​   A. ​between-groups and error variance.   ​B. within-groups and error variance.   C. ​between-groups and participant varia...
Select the error that would most likely occur:  a case-control study examining the association between increased chronic diseases and physical activity in middle-ages, both controls and cases tend to...
O G mathxl.com C + Content x Do Homework - 3.3 2021FA Elementary Statistical Methods (MATH-1342-71305) Alejandra Pineda & | 11/02/21 8:04 PM Homework: 3.3 Question 2, 3.3.1-T HW Score: 20%, 1 of 5...
You work in a Title I school with 95% of your students receiving free or reduced-cost meals. Your principal wonders if there is a relationship between the socio-economic status of your students and sl...
Use the GSS 2014 data on education from Chapter 5 ("The Normal Distribution"), Exercise 5.   Mean Standard Deviation N Lower class 12.11 2.83 122 Working class 13.01 2.91 541 Middle class 14.99 2.9...
The average Mcdonald's restaurant generates $2.8 million in sales each year with a standard deviation of 0.7. Roy wants to know if the average sales generated by Mcdonald's restaurants in New York is ...
Take a random sample of 40 of these hospitals using a systematic sample of every 50th hospital, starting with hospital 1. Using the sample and assuming that the population standard deviation of beds i...
Suppose a study claims that the average number of admissions for small hospitals is 750 per year. Use the small hospitals only part of the AHA database as your sample and a 5% level of significance to...