What would happen to the sample size

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Question: a. How large a sample is needed to determine the percentage of adult Americans who want help figuring out the best methods for improving their health? A previous survey indicated that 66% would like help with this important health issue. Use a 90% level of confidence and assume that you would like the sample to be within 3% of the true population proportion.

b) If the previous problem (3a) did not have a value for the sample proportion, what would happen to the sample size? There is no need to calculate the new sample size - simply comment on the effect of not knowing the sample proportion.

Reference no: EM132767527

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