A random sample of 40

40 adults with no children under the age of 18 years results in a mean daily leisure time of 5.02

5.02 hours, with a standard deviation of 2.48

2.48 hours. A random sample of 40

40 adults with children under the age of 18 results in a mean daily leisure time of 4.09

4.09 hours, with a standard deviation of 1.55

1.55 hours. Construct and interpret a 90

90% confidence interval for the mean difference in leisure time between adults with no children and adults with children left parenthesis mu 1 minus mu 2 right parenthesis

12.

Let mu 1

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

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

The 90

90% confidence interval for left parenthesis mu 1 minus mu 2 right parenthesis

12 is the range from

nothing

hours to

nothing

hours.

(Round to two decimal places as needed.)