Posted by **Janelle** on Wednesday, November 9, 2011 at 9:21am.

A psychologist wants to estimate the variance of employee test scores. A random

sample of 18 scores had a sample standard deviation 10.4. Find a 90% confidence

2

interval for the population variance. What assumption, if any, have you made in calculating this interval estimate?

## Answer This Question

## Related Questions

- Statistics - The grades in the final exam of a random sample of 25 students ...
- Stats (Math) - Assume that Science scores on a 25-point quiz for a random sample...
- Stats - A random sample of 100 GMAT scores has a mean of 500. Assume that GMAT ...
- statistics - what are the mean and standard deviation of a sampling distribution...
- Math - The standard deviation of test scores on a certain achievement test Is ...
- statistics - Scores on a certain test are normally distributed with a variance ...
- statistic - 1. Past experience indicates that the variance, ¦Ò2x, of the scores...
- statistics - The population standard deviation (σ) for a standardized ...
- statistics - Scores on a certain test are normally distributed with a variance ...
- basic statistics for the behavioral sciences - on a standard test of motor ...

More Related Questions