The null and alternate hypotheses are: H0 : μ1 = μ2 H1 : μ1 ≠ μ2 A random sample of 12 observations from one population revealed a sample mean of 23 and a sample standard deviation of 2.5. A random sample of 5 observations from another population revealed a sample mean of 25 and a sample standard deviation of 2.7. At the 0.10 significance level, is there a difference between the population means? State the decision rule. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) Compute the pooled estimate of the population variance. (Round your answer to 3 decimal places.) Compute the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places
The null and alternate hypotheses are:
H0 : μ1 = μ2
H1 : μ1 ≠ μ2
A random sample of 12 observations from one population revealed a sample mean of 23 and a sample standard deviation of 2.5. A random sample of 5 observations from another population revealed a sample mean of 25 and a sample standard deviation of 2.7.
At the 0.10 significance level, is there a difference between the population means?
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State the decision rule. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.)
-
Compute the pooled estimate of the population variance. (Round your answer to 3 decimal places.)
-
Compute the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)
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