YOU use a chi-square distribution, you need to assume normality
but there is no t-test here
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?