Question 9

9. The number of credit cards per people in a small town is listed below. Credit cards 0 1 2 3 4 People 180 440 270 80 30 a.) Construct a table describing the probability distribution. P (x) 0 1 2 3 4 b.) Determine the mean and standard deviation of x. (Show all work. Just the answer, without supporting work, will receive no credit. If a calculator or Excel was used, write out the function.)