Observations with a mean


A Research assistant is asked to draw two independent normally distributed samples. The first sample, X has a 10 observations with a mean of 1 and sample variance of 2. The second sample, Y has 20 observations with a mean of .5 and a sample variance of 3. Test the following hypotheses:

a) Xbar=Ybar

b) Xbar>Ybar

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Basic Statistics: Observations with a mean
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