Question
The null and alternate hypotheses are: H 0 : 1 = 2 H 1 : 1 2 A random sample of 9 observations from one
The null and alternate hypotheses are: H0 : 1 = 2 H1 : 1 2 A random sample of 9 observations from one population revealed a sample mean of 25 and a sample standard deviation of 4.0. A random sample of 4 observations from another population revealed a sample mean of 29 and a sample standard deviation of 4.6. The population standard deviations are unknown but assumed to be equal. At the 0.01 significance level, is there a difference between the population means? Required: a. State the decision rule. (Negative amounts should be indicated by a minus sign. Round your answer to 3 decimal places.)
The decision rule is to reject H0 if t < ? or t > ?
b. Compute the pooled estimate of the population variance. (Round your answer to 3 decimal places.)
c. Compute the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)
d. The p-value is
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