How many telephone numbers should she order

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Reference no: EM131800725

A marketing researcher must determine how many telephone numbers she needs order from a sample provider to complete a survey of ATM users.

The goal is to complete 400 interviews with ATM users.

From past experience, she estimates that 60 percent of the phone numbers provided will be working phone numbers.

The estimated incidence rate (percentage of people contacted who are ATM users) is 43 percent.

Finally, she estimates from previous surveys that 35 percent of the people contacted will agree to complete the survey.

How many telephone numbers should she order?

Reference no: EM131800725

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