This is a Lesson 14problem.

You should write down the mean and standard deviation for this problem.

You might see multiple versions of this problem, but mu and sigma will not change.

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It is believed that 50%of all Americans are "Introverted".

We take an unbiased sample ofn =330students at Wilmington University.

We will model the proportion of students who are "Introverted".

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Determine the mean and standard deviation for the p-hat model.

Round your SD to four decimal places.

Example SD: 0.0209

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Question:

Determine the probability that we get a sample with 170or more"Introverted".

Round your answerto four decimal places.

Example Answer: 0.2056