Refer to Exercise 11. Construct a 90% confidence interval for the difference 1 2. Exercise 11 A random sample of 76 residents in a

Refer to Exercise 11.

Construct a 90% confidence interval for the difference μ1 − μ2.

Exercise 11

A random sample of 76 residents in a small town had a mean annual income of \($34,214\), with a sample standard deviation of \($2171\). In a neighboring town, a random sample of 88 residents had a mean annual income of \($31,671\) with a sample standard deviation of \($3279\). Let μ1 be the population mean annual income in the first town, and let μ2 be the population mean annual income in the neighboring town. Compute a point estimate for the difference μ1 − μ2.