Question: At 99confidence, how large a sample should be taken to obtain a margin of error of0.031 for the estimation of a population proportion? Assume that

At 99confidence, how large a sample should be taken to obtain a margin of error of0.031 for the estimation of a population proportion? Assume that past data are not available for developing a planning value for p*. Round up to the next whole number.

2nd:

Sample of 65, mean of 19.5, standard deviation of 5.2

Provide 90 and 95 confidence interval.

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