A market researcher for the users of Apples products wants to know the proportion of people who

Question:

A market researcher for the users of Apple’s products wants to know the proportion of people who own an Apple iPad.

A survey of 600 people indicated that 86% own an iPad.

a) Find the standard deviation of the sampling distribution of the proportion.

b) How large would the standard deviation be if the number of people surveyed was only 150 customers? (Assume that the proportion is about the same.)

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