Question: have no preference O prefer a 95% confidence level QUESTION 30 You can derive a first estimate of the population standard deviation for a measure

have no preference O prefer a 95% confidence level QUESTION 30 You can derive a first estimate of the population standard deviation for a measure by: Relying on secondary data and expert judgment Doing some preliminary cluster sampling Using a focus group Dividing the confidence level by 10. QUESTION 31 The confidence level in a confidence interval corresponds to: The probability that the interval includes the true population value

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