Question: 0 Question 'I v When building a Confidence Interval for a population mean, when do you use a Z-interval? '3' When they give you the

0 Question 'I v When building a Confidence Interval for a population mean, when do you use a Z-interval? '3' When they give you the standard deviation of the sample instead of you having to calculate it '31:} When the sample size is 30 or more '3' When the sample size is less than 30 '3' When the population standard deviation is known

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