The average hourly pay for a sales person in a moderate size departmental store in Texas is $14/hour and the standard deviation of $2. You believe this is not the case and decide to conduct a study, now that you have taken this stats course. You survey 100 sales person and compute the average hourly pay to be $15/hr.

a) Write the Null and Research Hypotheses

b) Test the hypothesis at the appropriate alpha level.