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.... A test is made of HO: u=20 versus H1: u>20. A sample of size n=53 is drawn, and ;=22. The population standard deviation is

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A test is made of HO: u=20 versus H1: u>20. A sample of size n=53 is drawn, and ;=22. The population standard deviation is o=5. (a) Compute the value of the test statistic z. (b) Is H0 rejected at the (1:0.05 level? (c) 15 H0 rejected at the a=0.10 level? (a) Compute the value of the test statistic. Round the answer to at least two decimal places. FE]

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