Question: a. Calculate the test statistic (and for Excel users, the p-value) when , s 50, and n 100. Use a 5% significance level.

a. Calculate the test statistic (and for Excel users, the p-value) when , s  50, and n  100.

Use a 5% significance level.

x = 145 x = 175 x = 23 x = 63 x = 120 x = 10 and s = 1

b. Repeat part

(a) with .

c. Repeat part

(a) with .

d. What happens to the t-statistic (and for Excel users, the p-value) when the sample mean decreases?

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