Mathematics, 10.03.2020 01:35 isabellecannuli

Historically, these bolts have an average thickness of 10.1 mm. A recent random sample of 10 bolts yielded these thicknesses:

9.7 9.9 10.3 10.1 10.5 9.4 9.9 10.1 9.7 10.3

a. Find the sample mean and standard deviation for these data.
b. Assume that the historical average is true. Calculate the observed value of the t-statistic.
c. What is the probability of these statistics (or worse) if the true mean were 10.1 mm?

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Historically, these bolts have an average thickness of 10.1 mm. A recent random sample of 10 bolts y...

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