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Math Help - Ttest question

  1. #1
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    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?
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  2. #2
    MHF Contributor matheagle's Avatar
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    YOU use a chi-square distribution, you need to assume normality
    but there is no t-test here
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