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Residential numbers in new york city

Telephone marketers and opinion polls use random digit dialing equipment to call residential telephone numbers at random. The polling firm Zogby International reports that just 17% of calls reach a live person. Calls are independent.

A telemarketer places 6 calls. What is the probability (±0.0001) that none of them reaches a person?

Only 6% of calls made to residential numbers in New York City reach a person. What is the probability (±0.0001) that none of 6 calls made to New York City reaches a person?

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## Q : Gallon of milk at various stores

The prices of a gallon of milk at various stores in one town have a mean of $3.86 with a standard deviation of $0.13. Using Chebyshev's Theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.47 and $4.25. Round