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A sample of 65 observations is selected from one population. The sample mean is 2.67 and the
sample standard deviation is 0.75. A sample of 50 observations is selected from a second population.
The sample mean is 2.59 and the sample standard deviation is 0.66. Conduct the following
test of hypothesis using the .08 significance level.
H0: &#956;1&#8804; &#956;2
H1: &#956;1 > &#956;2
a. Is this a one-tailed or a two-tailed test?
b. State the decision rule.
c. Compute the value of the test statistic.
d. What is your decision regarding H0?
e. What is the p-value?

Note: Use the five-step hypothesis testing procedure
to solve the following exercises.

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#### Solution Preview

a) This is a 1-tailed test since the null hypothesis is "<=". If it were "=" it would be a 2-tailed test.
<br>
<br>b) Rule: Reject H0 if the p value < .08 (significance ...

#### Solution Summary

A sample of 65 observations is selected from one population. The sample mean is 2.67 and the
sample standard deviation is 0.75. A sample of 50 observations is selected from a second population.
The sample mean is 2.59 and the sample standard deviation is 0.66. Conduct the following
test of hypothesis using the .08 significance level.
H0: &#956;1&#8804; &#956;2
H1: &#956;1 > &#956;2
a. Is this a one-tailed or a two-tailed test?
b. State the decision rule.
c. Compute the value of the test statistic.
d. What is your decision regarding H0?
e. What is the p-value?

Note: Use the five-step hypothesis testing procedure
to solve the following exercises.

\$2.49