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How large of a sample should be taken if the researcher is

Consider the following test Ho: m = 20 Ha: m ≠ 20 The population standard deviation is 10. Use a = .05. How large of a sample should be taken if the researcher is willing to accept a .05 probability of making a Type II error when the actual population mean is 22 and the population mean in the null hypothesis is 20?

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Basic Statistics: How large of a sample should be taken if the researcher is

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