Posted by **martha** on Thursday, July 31, 2014 at 6:12pm.

The following list is a sampling of the costs of various statistics textbooks used at several colleges. Give the upper confidence limit for a 95% confidence interval estimate for the mean cost of all statistics textbooks.

109.95; 92.00; 96.70; 84.85; 92.60; 84.45; 90.95; 77.00; 75.50

- statistics -
**MathGuru**, Thursday, July 31, 2014 at 8:01pm
Formula:

CI95 = mean ± 1.96(sd/√n)

You will need to calculate the mean and standard deviation for your data. In the formula, n = sample size.

Once you have what you need, substitute into the formula and determine the confidence interval.

I hope this will help get you started.

- statistics -
**Mabel**, Thursday, May 12, 2016 at 8:41am
28.22

## Answer This Question

## Related Questions

- Statistics - A sample of 53 night-school students' ages is obtained in order ...
- math check - While writing an article on the high cost of college education, a ...
- Statistics - A confidence interval was used to estimate the proportion of ...
- statistics - Can someone guide me on how to solve this problem: A sample of 52 ...
- statistics HELP! - A data set includes body temperatures of healthy adult humans...
- Statistics - Which of the following statements correctly interprets a 95% ...
- statistics - A sample of 65 night-school students' ages is obtained in order to ...
- statistics - Help!!!!!! A confidence interval estimate for the population mean ...
- statistics - A data set includes body temperatures of healthy adult humans for ...
- statistics - Describe whether the following study would most likely be “...

More Related Questions