Question: A random sample of 30 12th-grade students was selected. The sample mean height was 170.7 centimeters, and the sample standard deviation was 11.5 centimeters. a.

A random sample of 30 12th-grade students was selected. The sample mean height was 170.7 centimeters, and the sample standard deviation was 11.5 centimeters.

a. State how you would fill in the numbers below to do the calculation with Minitab Express.

b. Report the confidence interval in a carefully worded sentence, using the
Minitab Express output provided.

1-Sample t Data Options Display Summarized data Sample size: Sample mean: Sample

1-Sample t Data Options Display Summarized data Sample size: Sample mean: Sample standard deviation: Perform hypothesis test Hypothesized mean Cancel OK 1-Sample t Descriptive Statistics Mean 170.700 95% CI for u (166.406, 174.994) StDev SE Mean 30 11.500 2.100 u:mean of Sample

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