A sales for sure receives an typical of three calls every hour ~ above its toll-free number. Expect you to be asked to uncover the probability that it will receive at least three calls, in a provided hour:

(a) (i) which circulation does this script fit and also why?

(ii) define the variable of interest, X.

(iii) What space the feasible values the X?

(b) What is the probability that in a provided hour that will get at least three calls?

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