Mean of the sampling distribution


According to a survey in a country, 38% of adults do not have any credit cards. Suppose a simple random sample of 900 adults is obtained

A. Determine the mean of the sampling distribution of p^

B. Determine the standard deviation of the sampling distribution of p^

C. In a random sample of 900 adults, what is the probability that less than 36% have no credit cards?

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Mathematics: Mean of the sampling distribution
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