Question: Let be the margin of error for a confidence interval. We conclude that the confidence interval will cover the true mean of the time. To

Let be the margin of error for a confidence interval. We conclude that the confidence interval will cover the true mean of the time.

To determine how well a new method of teaching vocabulary is working in a certain elementary school, education researchers plan to give a vocabulary test to a sample of 40 sixth graders. Assume the sample standard deviation is s = 8. The researchers plan to compute the sample mean ;, then construct a 98% confidence interval for the population mean test score. Interpret the interval. Let m be the margin of error for a 98% confidence interval. We conclude that the confidence interval xm

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