# Confidence interval and chi square hypothesis test for variance

A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s^2 = 19.5. Determine the 98% confidence interval for ^2

A random sample of n = 12 is drawn from a population that is normally distributed, and the sample variance is s^2 = 19.3. Use  = 0.025 in testing H0: ^2 = 29.0 versus H1: ^2 ≤ 9.4 versus H1: ^2 > 9.4

© BrainMass Inc. brainmass.com June 3, 2020, 10:01 pm ad1c9bdddfhttps://brainmass.com/statistics/confidence-interval/confidence-interval-chi-square-hypothesis-test-variance-210752

#### Solution Preview

A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s^2 = 19.5. Determine the 98% confidence ...

#### Solution Summary

The solution determines a confidence interval and chi square hypothesis test for variance.

$2.19