Question: Given a population in which the proportion of items with a desired attribute is p = 0.25, if a sample of 400 is taken, a.

Given a population in which the proportion of items with a desired attribute is p = 0.25, if a sample of 400 is taken,
a. What is the standard deviation of the sampling distribution of ?
b. What is the probability the proportion of successes in the sample will be greater than 0.22?

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