# Random digit dialing | Statistics homework help on Random digit dialing, top quality statistics homework help, 3 pages

Statistics homework help on Random digit dialing: Random digit dialing When a polling company calls a telephone number at random, there is only a 9% chance that the call reaches a live person and the survey is successfully completed. 10 Suppose the random digit dialing machine makes 15 calls. Let X= the number of calls that result in a completed survey.

a. Find the probability that more than 12 calls are not completed.

b. Calculate and interpret .

c. Calculate and interpret .

(a) the required probability is .

(b)The computed value of mean shows that on an average out of 15 calls ,  will be completed.

(c)The total number of calls that get completed will vary by  calls in comparison of mean of  calls.

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