Discuss the below:
Hypothesis testing for Variance and Standard Deviation
Q: A statistics professor teaches 2 statistics classes. One class is taught during the day and the other class is taught in the evening. She gives a midterm exam in each class. She claims that the standard deviation for the day class was less than the standard deviation for the evening class. The standard deviation for the day class was 21.984 and for the evening class it was 12.026. The day class has an enrollment of 5 and the evening class has an enrollment of 20 . (Hint: d.f.N = 4 and dip = 19). Is there sufficient evidence to support her claim at a =0.05 level?