Question: Suppose that you are testing the following hypothesis regarding the difference in means of two independent populations. H(0):μ(1)- μ(2)= 0 against the alternative H(a):μ(1)- μ(2)>0 at level alpha = 0.01. Suppose further that you fail to reject the null hypothesis. This means that you might have committed a beta error. Suppose you know the following information: σ(1)=4,σ(2)=5, n(1)=20, n(2)=25 and the true value for μ(1)- μ(2) =5. Show that your beta error is:

0.810

0.180

0.801

0.081

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