We are interested in whether the true average number of students with gym memberships outside their respective university's fitness center for2018 is not equal to the claimed mean in 2017. Assume that we know the population standard deviation to be 13. a. Use the confidence interval approach to hypothesis testing to conclude in context at the alpha significance level of .05 (remember to list the hypotheses, the interval, and then the conclusion in context).

Fig: 1

Fig: 2