A group of students enroll in a behavioral statistics course taught by one of two professors. The

Question:

A group of students enroll in a behavioral statistics course taught by one of two professors. The mean grade in Professor G's class is 80% (95% CI = 72%- 88%), and the mean grade in Professor P's class is 76% (95% CI = 68%-84%).
(a) Is one confidence interval more precise? Explain.
(b) Is one confidence interval associated with greater certainty? Explain.