Consider the following results for two samples randomly taken from two populations.
Sample A
Sample B
Sample Size25
38
Sample Mean66
60
Sample Standard Deviation5
7
?
a.What are the degrees of freedom for the t distribution?b.At 95% confidence, compute the margin of error.c.Develop a 95% confidence interval for the difference between the two population means.
What will be an ideal response?
?
| a. | 60 |
| b. | 3.026 |
| c. | 2.974 to 9.026 |
Business
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