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The null and alternate hypotheses are:

H0: μ1 ≤ μ2
H1: μ1 > μ2

A random sample of 25 items from the first population showed a mean of 111 and a standard deviation of 8. A sample of 17 items for the second population showed a mean of 103 and a standard deviation of 9. Use the 0.10 significance level.

a. Find the degrees of freedom for unequal variance test. (Round down your answer to the nearest whole number.)



b. State the decision rule for 0.100 significance level. (Round your answer to 3 decimal places.)



c. Compute the value of the test statistic. (Round your answer to 3 decimal places.)

Sagot :

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