Hi below is an attachment I need help with. all 3 of the questions are linked so it would help if you answered all of them. thank you!!!

Page K 6. (8 points) The following are exam percentages for a recent calculus exam. Find the mean, median, sample standard deviation and coefficient of variation (CV) for this sample. Round any decimals to three places. Clearly label your answers. Percent 79 77 46 79 91 76 84 68 7. (2 points) Based off of your answers to the previous problem, compute the z score for the percentage of 91%, and state whether or not it is unusual. (2 points) Also, compute the z score for the percentage of 46%,,and state whether or not it is unusual. 91