Given two independent random samples with the following results:

n1= 14 n2= 9

x1=92.30 x2=81.50

s1= 19.75 s2= 25.75

Use this data to find the 90% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed.

1. Find the point estimate that should be used in constructing the confidence interval.
2. What Is the margin of error? 6 decimal places
3. What is the confidence interval? 6 decimal places