Test the claim that for the population of statistics final exams, the mean score is µ= 79 using the alternative hypothesis that u 79. Sample statistics include n = 28, z = 81, and s = 12. Use a significance level of a = 0.05 and assume a normally distributed population. %3D a) The test statistic is: 12.9 b) The positive critical value is: c) The conclusion is: A. there is sufficient evidence to reject the claim that the mean score is equal to 79. B. there is not sufficient evidence to reject the claim that the mean score is equal to 79.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
Test the claim that for the population of statistics final exams, the mean score is u = 79 using the alternative
hypothesis thatu # 79. Sample statistics include n = 28, r =
a = 0.05 and assume a normally distributed population.
81, and s 12. Use a significance level of
a) The test statistic is: 12.9
b) The positive critical value is:
c) The conclusion is:
A. there is sufficient evidence to reject the claim that the mean score is equal to 79.
B. there is not sufficient evidence to reject the claim that the mean score is equal to 79.
Test the claim that the two samples described below come from populations with the same mean. Assume that
the samples are independent simple random samples. Use a significance level of 0.04.
Sample 1: n = 65, 1 17, s = 1.5.
Sample 2: n2 90, 2 15, s2 1.
%3D
a) The test statistic is: ztest = 9.3528
b) The p-value is: p 2.0518
c) The conclusion is:
A. There is not sufficient evidence to warrant rejection of the claim that the two populations have the same mean.
B. There is sufficient evidence to warrant rejection of the claim that the two populations have the same mean.
Transcribed Image Text:Test the claim that for the population of statistics final exams, the mean score is u = 79 using the alternative hypothesis thatu # 79. Sample statistics include n = 28, r = a = 0.05 and assume a normally distributed population. 81, and s 12. Use a significance level of a) The test statistic is: 12.9 b) The positive critical value is: c) The conclusion is: A. there is sufficient evidence to reject the claim that the mean score is equal to 79. B. there is not sufficient evidence to reject the claim that the mean score is equal to 79. Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Use a significance level of 0.04. Sample 1: n = 65, 1 17, s = 1.5. Sample 2: n2 90, 2 15, s2 1. %3D a) The test statistic is: ztest = 9.3528 b) The p-value is: p 2.0518 c) The conclusion is: A. There is not sufficient evidence to warrant rejection of the claim that the two populations have the same mean. B. There is sufficient evidence to warrant rejection of the claim that the two populations have the same mean.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

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