Question
he null and alternate hypotheses are: H0:12=0H0:12=0 H1:120H1:120 A random sample of 22 observations from the first population revealed a sample mean of 334 and
he null and alternate hypotheses are:
H0:12=0H0:12=0
H1:120H1:120
A random sample of 22 observations from the first population revealed a sample mean of 334 and a sample standard deviation of 11. A random sample of 23 observations from the second population revealed a sample mean of 325 and a sample standard deviation of 15.
At the 0.05 significance level, is there a difference in the population means?
a. State the decision rule. (Negative answer should be indicated by a minus sign. Round the final answers to 3 decimal places.)
The decision rule is to reject H0ift< or > .
This is a (Click to select) two one -tailed test.
b. Compute the pooled estimate of the population variance. (Round the final answer to 2 decimal places.)
Pooled estimate of the population variance
c. Compute the test statistic. (Round the final answer to 3 decimal places.)
The test statistic is: t = .
d. What is your decision regarding H0?
H0is (Click to select) not rejected rejected .
e. Estimate the p-value. (Round the final answer to 4 decimal places.)
The p-value is .
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