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For a STAT 100 class of forty (n=40) students, the differences in hand span had an average of 3.39mm with a standard deviation of 7.58mm.

For a STAT 100 class of forty (n=40) students, the differences in hand span had an average of 3.39mm with a standard deviation of 7.58mm. Find the test statistic (z-score) and then the p-value. Show your computations for the z-score and explain how you found the p-value. What do you conclude? Why?

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