YOU use a chi-square distribution, you need to assume normality

but there is no t-test here

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- Sep 9th 2010, 08:49 AM #1

- Joined
- Sep 2010
- Posts
- 10

## Ttest question

Test NH:

*σy <5.0 against AH: σy >5.0 with an alpha=.05. Perform this test.*

*Sample mean is 6.989*

*Sample std is 3.5438*

*n is 30*

*Im confused because its asking for to test σy, in the past its always been*μ. how do i go about solving this problem?

- Sep 10th 2010, 06:12 PM #2