A random sample of 40 adults with no children under the age of 18 years results in a mean daily leisure time of 5.37 hours, with a standard deviation of 2.29 hours. A random sample of 40 adults with children under the age of 18 results in a mean daily leisure time of 4.01 hours, with a standard deviation of 1.57 hours. Construct and interpret a 90% confidence interval for the mean difference in leisure time between adults with no children and adults with children (12).

Let 1 represent the mean leisure hours of adults with no children under the age of 18 and 2

represent the mean leisure hours of adults with children under the age of 18.

The 90% confidence interval for (12) is the range from hours to

hours