A college offers a self-paced course in algebra. College officials are interested in the number of hours it takes students to meet the objectives of the course. In a sample of 39 students, the mean number of hours was 75.9 with a standard deviation of 54.3. Round all answers to THREE decimal places. a. Construct a 94% confidence interval for the mean number of hours it takes for a student to meet the course objectives. Critical value: z. or t. = (Enter the positive one.) Margin of Error: E = Confidence Interval: [ b. Interpret your result in part (a) in a complete sentence.