For a sample of 25 observations taken from a normally distributed population with standard deviation of 6, a 95% confidence interval estimate for the population mean would require the use of: A) t = 2.064. B) t = 1.711. C) X² = 39.3641. D) z = 1.96.

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Quizplus · Accepted Answer

Since the sample size is greater than 30, we can use a z-score to construct the confidence interval. A 95% confidence interval corresponds to a z-score of 1.96.

For a Sample of 25 Observations Taken from a Normally