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From the records of a health-insurance companies in Pennsylvania, it is known that 86% of the accounts include dental coverage. A researcher would like to

From the records of a health-insurance companies in Pennsylvania, it is known that 86% of the accounts include dental coverage. A researcher would like to take a random sample of 500 accounts to review. Find the standard deviation of the sample proportion in this situation.

Give your answer to 4 decimal places.

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