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The mean annual tuition and fees for a sample of 12 private colleges was $40500 with...

The mean annual tuition and fees for a sample of 12 private colleges was $40500 with a standard deviation of 5000 A dotplot shows that it is reasonable to assume that the population is approximately normal. You wish to test whether the mean tuition and fees for private colleges is different from 37400 . Choose whichever method you would like.

Math   Statistics-And-Probability   
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Answer #1

The hypotheses are

Given the sample size and sample mean , sample standard deviation .

The test statistic is

The P-value is

Since the , we accdept the null hypothesis at 5% significance level.

We conclude that the mean tuition and fees for private colleges is not different from 37400.

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