Question 9.39 (pg. 442)
(a) Construct a 95% confidence interval to estimate the mean time spent studying for the final exam for students taking introductory psychology at the university.
(b) Construct a 90% confidence interval for the mean percentage of study time that occurs in the 24 hours prior to the exam.
(a) Construct a 95% confidence interval to estimate the mean time spent studying for the final exam for students taking introductory psychology at the university.
(b) Construct a 90% confidence interval for the mean percentage of study time that occurs in the 24 hours prior to the exam.