Homework Help is Here – Start Your Trial Now!
Math
Statistics
Justine is an analyst for a sleep study center in a major city. She is looking to test the claim that the population mean amount of time an adult in the city sleeps per day is 7.2 hours. She believes that the population mean is more than 7.2 hours. To test this claim, she selects a random sample of 63 adults from the city and finds the sample mean to be 7.52 hours with a sample standard deviation of 1 . 14 hours. The test statistic t for a hypothesis test of Ho : μ = 7.2 versus Ha : μ 〉 7.2 is computed as t 2.23, which has 62 degrees of freedom. If 0.01 〈p-value< 0.025 and the level of significance is α = 0.10, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true population mean amount of time an adult in the city sleeps per day is greater than 7.2 hours? Select all that apply: Fail to reject the null hypothesis that the true population mean amount of time an adult in the city sleeps per day is equal to 7.2 hours. Reject the null hypothesis that the true population mean amount of time an adult in the city sleeps per day is equal to 7.2 hours. O There is enough evidence at the α-0. 10 level of significance to support the claim that the true population mean amount of time an adult in the city sleeps per day is greater than 7.2 hours. There is not enough evidence at the a 0.10 level of significance to suggest that the true population mean amount of time an adult in the city sleeps per day is not equal to 7.2 hours.

Justine is an analyst for a sleep study center in a major city. She is looking to test the claim that the population mean amount of time an adult in the city sleeps per day is 7.2 hours. She believes that the population mean is more than 7.2 hours. To test this claim, she selects a random sample of 63 adults from the city and finds the sample mean to be 7.52 hours with a sample standard deviation of 1 . 14 hours. The test statistic t for a hypothesis test of Ho : μ = 7.2 versus Ha : μ 〉 7.2 is computed as t 2.23, which has 62 degrees of freedom. If 0.01 〈p-value< 0.025 and the level of significance is α = 0.10, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true population mean amount of time an adult in the city sleeps per day is greater than 7.2 hours? Select all that apply: Fail to reject the null hypothesis that the true population mean amount of time an adult in the city sleeps per day is equal to 7.2 hours. Reject the null hypothesis that the true population mean amount of time an adult in the city sleeps per day is equal to 7.2 hours. O There is enough evidence at the α-0. 10 level of significance to support the claim that the true population mean amount of time an adult in the city sleeps per day is greater than 7.2 hours. There is not enough evidence at the a 0.10 level of significance to suggest that the true population mean amount of time an adult in the city sleeps per day is not equal to 7.2 hours.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
Justine is an analyst for a sleep study center in a major city. She is looking to test the claim that the population mean amount of time an adult in the city sleeps per day is 7.2 hours. She believes that the population mean is more than 7.2 hours. To test this claim, she selects a random sample of 63 adults from the city and finds the sample mean to be 7.52 hours with a sample standard deviation of 1 . 14 hours. The test statistic t for a hypothesis test of Ho : μ = 7.2 versus Ha : μ 〉 7.2 is computed as t 2.23, which has 62 degrees of freedom. If 0.01 〈p-value< 0.025 and the level of significance is α = 0.10, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true population mean amount of time an adult in the city sleeps per day is greater than 7.2 hours? Select all that apply: Fail to reject the null hypothesis that the true population mean amount of time an adult in the city sleeps per day is equal to 7.2 hours. Reject the null hypothesis that the true population mean amount of time an adult in the city sleeps per day is equal to 7.2 hours. O There is enough evidence at the α-0. 10 level of significance to support the claim that the true population mean amount of time an adult in the city sleeps per day is greater than 7.2 hours. There is not enough evidence at the a 0.10 level of significance to suggest that the true population mean amount of time an adult in the city sleeps per day is not equal to 7.2 hours.
Transcribed Image Text:Justine is an analyst for a sleep study center in a major city. She is looking to test the claim that the population mean amount of time an adult in the city sleeps per day is 7.2 hours. She believes that the population mean is more than 7.2 hours. To test this claim, she selects a random sample of 63 adults from the city and finds the sample mean to be 7.52 hours with a sample standard deviation of 1 . 14 hours. The test statistic t for a hypothesis test of Ho : μ = 7.2 versus Ha : μ 〉 7.2 is computed as t 2.23, which has 62 degrees of freedom. If 0.01 〈p-value< 0.025 and the level of significance is α = 0.10, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true population mean amount of time an adult in the city sleeps per day is greater than 7.2 hours? Select all that apply: Fail to reject the null hypothesis that the true population mean amount of time an adult in the city sleeps per day is equal to 7.2 hours. Reject the null hypothesis that the true population mean amount of time an adult in the city sleeps per day is equal to 7.2 hours. O There is enough evidence at the α-0. 10 level of significance to support the claim that the true population mean amount of time an adult in the city sleeps per day is greater than 7.2 hours. There is not enough evidence at the a 0.10 level of significance to suggest that the true population mean amount of time an adult in the city sleeps per day is not equal to 7.2 hours.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS