TOPIC: Hypothesis Testing (Statistic Question)
In 2015, I taught my first semester at Yale University, astandard deviation was calculated based on the scores on the SDF,the question was asking whether or not I encourage studentquestions in my classroom. The standard deviation for the 2015class (economics class) was 1.03 with 31 responses. In 2018, thestandard deviation for that same question came out to be 0.88 with24 responses in my calculus class. [2015 = economics class, 2018 =calculus class] Questions are below.
(a). Please test the hypothesis that the Standard Deviation ofthe 2015 class on this question is larger than it is for the 2018class at a significance level of 0.05. Please do problem by handand find the correct critical value using the R Studio (softwareprogram). If you statisticians are familiar with that software.
(b). Please test the hypothesis that the Standard Deviation ofthe 2015 class on this question is different than it is for the2018 class at a significance level of 0.05. Please do problem byhand and find the correct critical value using the R Studio(software program).
THANK YOU CHEGG EXPERTS
