Question

Use the following for question 1, 2, and 3. Consider the following hypothesis test: H0: µ1...

Use the following for question 1, 2, and 3. Consider the following hypothesis test:

H0: µ1 – µ2 = 0

Ha: µ1 – µ2 ≠ 0

The following results are from samples from two populations.

Sample 1

Sample 2

sample size

12

15

sample mean

13

10

sample std. dev.

5

8

1) What is the estimate of the difference between the two population means? Use Sample1 – Sample2?

2) What is the value of the test statistic? Give your answer to 2 decimal places.

3) Using 13 degrees of freedom and α = 0.05, what is the conclusion of the hypothesis test?

Math   Statistics-And-Probability   
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