Standard deviation of the sampling distribution

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Assume that the population proportion of all business professionals who select an airline based on price is 0.30. A random sample of 215 business professionals is to be used for further study.

A. What is the shape, mean(expected value), and standard deviation of the sampling distribution of the sample proportion for samples of size 215?

B. What is the probability that our sample of 215 results in a sample proportion that falls within 4 percent (+/- 0.03) of the population value?

Reference no: EM131098568

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