The Bureau of Labor StatisticsAmerican Time Use Surveyshowed that the amount of time spent using a computer for leisure varied greatly by age. Individuals age 75 and over averaged 0.15 hour (9 minutes) per day using a computer for leisure. Individuals ages 15 to 19 spend 1.0 hour per day using a computer for leisure. If these times follow an exponential distribution, find the proportion of each group that spends:

rev: 05_18_2015_QC_CS-14973

1. value: 10.00 points Required information

a.	Less than 8 minutes per day using a computer for leisure.(Round your answers to 4 decimal places.)

	Proportion
Age 75 and over
Ages 15 to 19

References eBook & Resources WorksheetDifficulty: 2 IntermediateLearning Objective: 07-05 Describe the exponential probability distribution and use it to calculate probabilities.Check my work 2. value: 10.00 points Required information

b.	More than two hours.(Round your answers to 4 decimal places.)

	Proportion
Age 75 and over
Ages 15 to 19

References eBook & Resources WorksheetDifficulty: 2 IntermediateLearning Objective: 07-05 Describe the exponential probability distribution and use it to calculate probabilities.Check my work 3. value: 10.00 points Required information

c.	Between 16 minutes and 48 minutes using a computer for leisure.(Round your answers to 4 decimal places.)

	Proportion
Age 75 and over
Ages 15 to 19

References eBook & Resources WorksheetDifficulty: 2 IntermediateLearning Objective: 07-05 Describe the exponential probability distribution and use it to calculate probabilities.Check my work 4. value: 10.00 points Required information

d.	Find the 30th percentile. seventy percent spend more than what amount of time?(Round your answers to 2 decimal places.)

Amount of time for individuals ages 75 and over	minutes
Amount of time for individuals ages 15 to 19	minutes