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The claim is that...

The claim is that the IQ scores of statistics professors are normally distributed, with a mean greater than 127. A sample of 21 professors had a mean IQ score of 128 with a standard deviation of 2. Find the value of the test statistic.

The value of the test statistic is

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The claim is that the IQ scores of statistics professors are normally distributed, with a mean greater than 127. A sample of 21 professors had a mean IQ score of 128 with a standard deviation of 2. Find the value of the test statistic.

The value of the test statistic is

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