9.25 For the data 93, 97, 91, 88, 103, 94, 97, calculate the standard deviation under the

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9.25 For the data 93, 97, 91, 88, 103, 94, 97, calculate the standard deviation under the conditions in parts

(a) and (b). Then, complete parts

(c) and (d).

a. For this sample

b. As an estimate of the population

c. Calculate the standard error for t using symbolic notation.

d. Calculate the t statistic, assuming μ = 96.

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