(Solution) - The following results are for independent random samples taken from -(2025 Original AI-Free Solution)

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The following results are for independent random samples taken from two populations.

a. What is the point estimate of the difference between the two population means?
b. What is the degrees of freedom for the t distribution?
c. At 95% confidence, what is the margin of error?
d. What is the 95% confidence interval for the difference between the two population means?