You are further told that the accounting firm asked the new clients how many types of advertisements from the accounting firm they experienced. Results recorded below.

Note: X represents the number of types of advertising experienced by the new clients.

a) SHOWING YOUR WORKINGS, calculate the expected value of X, correctly rounded to two decimal places.

b) Interpret your answer to part a) in the context of this question.

c) SHOWING YOUR WORKINGS, calculate the standard deviation of X, correctly rounded to two decimal places.

Any text entered here will be displayed in the response input box when a new attempt at the question starts.

A) 28/136 = 20.6

B) 1/136 = 0.007

C) 48/136 = 0.353

D) 1/20 = 0.05