Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test.Three years ago, the mean price of a single-family home was $243,792. A real estate broker believes that the mean price has increased since thenWhich of the following is the correct conclusion?O A. There is sufficient evidence to conclude that the mean price of a single-family home has not changed.O B. There is sufficient evidence to conclude that the mean price of a single-family home has increased.OC. There is not sufficient evidence to conclude that the mean price of a single-family home has not changed.O D. There is not sufficient evidence to conclude that the mean price of a single-family home has increased.Statcrunchhp

Test is that whether the mean proce has increased.

Answered: Suppose the null hypothesis is not…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose your statistics professor reports test grades as z-scores and you got the score of 2.33 on an exam. a. Write a sentence explaining what that means. B. Your friend got a z-score of -2. If the grade satisfy the nearly normal condition, about what percent of the class scored lower than your friend?
Abby's score of 704 on the math portion of the 2002 GRE exam placed her in the 84th percentile rank. The standard deviation of this exam was 141. If the test scores are normally distributed, what was the mean score of the 2002 test takers? write your answer with one decimal place.
Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test. Three years ago, the mean price of a single-family home was $243,718. A real estate broker believes that the mean price has increased since then.
On a nationwide math test, the mean was 57 and the standard deviation was 4. If Roberto scored 90, what was his z-score?
A 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 from the water bottling company specifications that the standard deviation of the amount of water is 0.02 gallon. You select a random sample of 50 bottles, and the mean amount of water per 1-gallon bottle is 0.995 gallon. Complete parts (a) through (d) below. a. Is there evidence that the mean amount is different from 1.0 gallon? (Use a = 0.01.) Let u be the population mean. Determine the null hypothesis, Ho, and the alternative hypothesis, H,. Ho: H H: p V1 What is the test statistic? ZSTAT = (Round to two decimal places as needed.) What is/are the critical value(s)? (Use a = 0.01.) (Round to two decimal places as needed. Use a comma to separate answers as needed.) What is the final conclusion? O A. Fail to reject Hn. There is sufficient evidence to warrant rejection of the claim that the…
The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances that someone is earning more than $20 an hour?
Suppose there are 5 students in a room. The mean age is 20.0 years, and the median age is 19. If the youngest person leaves and is not replaced by another person, what happens to the mean and the median? The mean either increases or stays the same, and the median increases. The median either increases or stays the same, and the mean increases. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same.
Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test. Three years ago, the mean price of a single-family home was $243,712. A real estate broker believes that the mean price has increased since then. Which of the following is the correct conclusion? A. There is not sufficient evidence to conclude that the mean price of a single-family home has not changed. B. There is not sufficient evidence to conclude that the mean price of a single-family home has increased. C. There is sufficient evidence to conclude that the mean price of a single-family home has not changed. D. There is sufficient evidence to conclude that the mean price of a single-family home has increased.
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Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test. Three years ago, the mean price of a single-family home was $243,792. A real estate broker believes that the mean price has increased since then.