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# you have 30 observations from a normal distribution. The sample mean is 15 and the variance of X is 25. You want to test whether your sample is...

you have 30 observations from a normal distribution. The sample mean is 15 and the variance of X is 25. You want to test whether your sample is significantly greater than13.
A.) Write down the null and alternative hypotheses
C.can you reject the null hypotheses at the 5% significance level?
D.Can you reject the null hypotheses at 1%significance level?

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you have 30 observations from a normal distribution. The sample mean is 15 and the variance of X is 25. You want to test whether your sample is significantly greater than13.
A.) Write down the null...

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