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Compute the value of the test statistic-decision rule

Discussion:

Q: Given the following hypothesis:

H0: µ =/>20
H1: µ<20

A random sample of five resulted in the following values: 18, 15, 12, 19, and 21. Using the .01 significance level, can we conclude the population mean is less than 20?

a. State the decision rule.

b. Compute the value of the test statistic.

c. What is your decision regarding the null hypothesis?

d. Estimate the p-value.

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Basic Statistics: Compute the value of the test statistic-decision rule

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