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Example Question #51 : Ap Statistics
A health insurance executive suspects that 50% of insurance applications are incomplete (i.e. critical data is missing from the application). He wants to gather a sample to estimate the true proportion. He wants to be within 5% of the true mean with 95% confidence.
What sample size does he need?
Possible Answers:
365
395
385
375
405
Correct answer:
385
Explanation:
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