Ms. Fitness-Buff, a high school gym teacher, wants to propose an after-school fitness program. To get an idea of the fitness level of the students at her school, she takes a random sample of 75 students and records the number of hours the students exercised in the past week. Her sample mean is 2.25 hours and she knows from past research that the population standard deviation is 2 hours. She wants to know if this varies from a population mean of 3 hours/week.
A. Construct a 95% confidence interval.

B. Draw a conclusion for a two-sided test at a = .05.

C. Ms. Fitness-Buff is told that if stude

Question

Ms. Fitness-Buff, a high school gym teacher, wants to propose an after-school fitness program. To get an idea of the fitness level of the students at her school, she takes a random sample of 75 students and records the number of hours the students exercised in the past week. Her sample mean is 2.25 hours and she knows from past research that the population standard deviation is 2 hours. She wants to know if this varies from a population mean of 3 hours/week.
A. Construct a 95% confidence interval.

B. Draw a conclusion for a two-sided test at a = .05.

C. Ms. Fitness-Buff is told that if stude

anonymous · Answer

B