A Researcher Is Testing the Effectiveness of a New Herbal

Essay

A researcher is testing the effectiveness of a new herbal supplement that claims to improve physical fitness.A sample of n = 16 college students is obtained and each student takes the supplement daily for six weeks.At the end of the 6-week period,each student is given a standardized fitness test and the average score for the sample is M = 39.For the general population of college students,the distribution of test scores is normal with a mean of µ = 35 and a standard deviation of σ = 12.Do students taking the supplement have significantly better fitness scores? Use a one-tailed test with α = .05.