a. Calculate the test statistic when x = 145, s = 50, and n = 100. Use
Question:
a. Calculate the test statistic when x̄ = 145, s = 50, and n = 100. Use a 5% significance level.
H0: µ = 150
H1: µ < 150
b. Repeat part (a) with x̄ = 140.
c. Repeat part (a) with x̄ = 135.
d. What happens to the t-statistic when the sample mean decreases?
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Rejection region a pvalue 1599 There is not enough evidence to infer tha...View the full answer
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Related Book For
Statistics For Management And Economics Abbreviated
ISBN: 9781285869643
10th Edition
Authors: Gerald Keller
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