Posted by **Andrea** on Friday, March 15, 2013 at 11:02am.

A large number of children were surveyed. The table below shows the distribution of the time they spent watching TV in the week before the survey. Intervals include the left endpoint but not the right. You can assume that the times are uniformly distributed within each interval. The table is used to draw a histogram of the distribution.

time (hours) percent

0-4 28

4-8 36

8-12 12

12-20 12

20-28 12

Find the height of the bar over interval 4-8, in percent per hour. Please do not enter units of measurement.

Estimate the 80th percentile of the distribution of times, in hours; give the best estimate you can, based on the information in the problem. Please do not enter units of measurement.

## Answer this Question

## Related Questions

- Statistics - A large number of children were surveyed. The table below shows the...
- Statistics - Problem 6 A histogram shows the number of hours students spent ...
- Statistic - TABLE 12-11 Parents complain that children read too few storybooks ...
- Statistics - Here is a distribution you have seen before, in Exercise Set 2. It ...
- Statistics - The distribution of ages in the United States in the year 2010 is ...
- Statistics - Problem 1 The distribution of ages in the United States in the year...
- Statistics - A survey among freshman at a certain university revealed that the ...
- Statistics - A survey among freshmen at a certain university revealed that the ...
- statistics - A survey is being planned to determine the mean amount of time ...
- statistics - A survey was conducted to measure the number of hours per week ...

More Related Questions