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Suppose the manager of a shoe store wants to determine the current percentage of customers who are males. How many customers should the manager survey

Suppose the manager of a shoe store wants to determine the current percentage of customers who are males. How many customers should the manager survey in order to be95%

confident that the estimated (sample) proportion is within9 percentage points of the true population proportion of customers who are males?

z0.10 1.282

z0.05 1.645

z0.04 1.751

z0.025 1.960

z0.01 2.326

z0.005 2.576

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