In Order to Ensure That a Proper Sample Size Is

question 57

Multiple Choice

In order to ensure that a proper sample size is employed for confidence intervals,it would be best to ________.

• A)take an initial sample to estimate the population mean and then use that to estimate the best sample size
• B)take an initial sample to estimate the population standard deviation and use that estimate to determine the required sample size
• C)double the sample size that was originally proposed
• D)always use a sample size of 30

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