In: Math
The null and alternate hypotheses are: |
H0: μ1 ≤ μ2 |
H1: μ1 > μ2 |
A random sample of 26 items from the first population showed a mean of 114 and a standard deviation of 9. A sample of 15 items for the second population showed a mean of 99 and a standard deviation of 7. Assume the sample populations do not have equal standard deviations. |
a. |
Find the degrees of freedom for unequal variance test. (Round down your answer to the nearest whole number.) |
Degrees of freedom |
b. | State the decision rule for 0.025 significance level. (Round your answer to 3 decimal places.) |
Reject H0 if t> |
c. | Compute the value of the test statistic. (Round your answer to 3 decimal places.) |
Value of the test statistic |
d. | What is your decision regarding the null hypothesis? Use the 0.025 significance level. |
Null hypothesis | (Click to select)not rejectedrejected |