Students claim that their teacher has been grading them more harshly than she has in the past. According to the teacher's own records, test scores on her finals had averaged u 82, but in her class of seventeen students, the sample mean was x 79. If the sample standard deviation here is s 9, have the students proven that their grades this were year were truly lower? Use a 5% level of significance.
Students claim that their teacher has been grading them more harshly than she has in the past. According to the teacher's own records, test scores on her finals had averaged u 82, but in her class of seventeen students, the sample mean was x 79. If the sample standard deviation here is s 9, have the students proven that their grades this were year were truly lower? Use a 5% level of significance.
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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What is the null and alternate hypothesis? What is the P value and how did you indicate it? Write a comparison between the P-value and the a-value. Do we reject or accept the null hypothesis?

Transcribed Image Text:the students proven that their grades this were year were truly lower? Use a 5% level of significance.
seventeen students, the sample mean was x 79. If the sample standard deviation here is s 9, have
Students claim that their teacher has been grading them more harshly than she has in the past.
cording to the teacher's own records, test scores on her finals had averaged
eventeen students, the sample mean was x
82, but in her class of
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