An e-business manager wants to test the claim that the average number of complaints on Monday exceeds 20. Randomly selecting 7 Mondays she calculated the sample mean and the sample standard deviation. From a previous research, it is known that the population of Monday complaint numbers is approximately normally distributed. What distribution should the manager use to test the claim? 0 Chi-Square (x2) distribution 0 F distribution 0 Student (t) distribution 0 Binomial distribution 0 Normal [2] distribution 0 None of the above