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July 31, 2014

Homework Help: STATISTICS HELP!!!!!!!

Posted by Amy on Wednesday, August 10, 2011 at 9:30am.

The probability that a person has an unlisted telephone number is 0.15. The district manager of
a political action group is phoning people urging them to vote. In a district with 416 households, all households have phones. What is the probability that the district manger will find that:

(a) between 40 and 80 have unlisted numbers?

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