November 30, 2015

Homework Help: Statistics

Posted by Maria B on Wednesday, March 16, 2011 at 6:38pm.

According to a recent survey, 75% of all customers will return to the same grocery store. Suppose 8 customers are selected at random:

A) What is the probability that exactly five of the customers will return?

B) What is the profability that all 8 will return?

C) What is the probability that at least on will return?

D) How many customers would be expected to return to the same store?

E) Calculate the variance in the number of customers returning to the same store?

F) Determine the standard Deviation.

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