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# Suppose that the true mean is .25 standard deviations away from the null hypothesis mean. You want to to find .05 significance level two-tailed test...

1. Suppose that the true mean is .25 standard deviations away from the null hypothesis mean. You want to to find .05 significance level two-tailed test and have a power of .85. How large a sample would you need? Remember that the output sample size is rounded up to the next integer.