# Question: The Bureau of Labor Statistics American Time Use Survey showed

The Bureau of Labor Statistics’ American Time Use Survey showed that the amount of time spent using a computer for leisure varied greatly by age. Individuals age 75 and over aver-aged 0.3 hour (18 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:

a. Less than 15 minutes per day using a computer for leisure.

b. More than 2 hours.

c. Between 30 minutes and 90 minutes using a computer for leisure.

d. Find the 20th percentile. Eighty percent spend more than what amount of time?

a. Less than 15 minutes per day using a computer for leisure.

b. More than 2 hours.

c. Between 30 minutes and 90 minutes using a computer for leisure.

d. Find the 20th percentile. Eighty percent spend more than what amount of time?

## Answer to relevant Questions

The cost per item at a supermarket follows an exponential distribution. There are many inexpensive items and a few relatively expensive ones. The mean cost per item is $3.50. What is the percentage of items that cost:a. ...The net sales and the number of employees for aluminum fabricators with similar characteristics are organized into frequency distributions. Both are normally distributed. For the net sales, the mean is $180 million and the ...According to a government study among adults in the 25- to 34-year age group, the mean amount spent per year on reading and entertainment is $1,994. Assume that the distribution of the amounts spent follows the normal ...The goal at U.S. airports handling international flights is to clear these flights within 45 minutes. Let’s interpret this to mean that 95% of the flights are cleared in 45 minutes, so 5% of the flights take longer to ...“Boot time” (the time between the appearance of the Bios screen to the first file that is loaded in Windows) on Eric Mouser’s personal computer follows an exponential distribution with a mean of 27 seconds. What is the ...Post your question