Question: The following result are for two independent random samples taken from two populations.
![1573_Sample 1.png](https://secure.tutorsglobe.com/CMSImages/1573_Sample 1.png)
a. What is the point estimate of the difference between the two population means?
b. What is the degrees of freedom for the I 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?