The population mean grade is 78, with a standard deviation of 6 points

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The population mean grade is 78, with a standard deviation of 6 points. Determine the sample size needed to detect an increase of 5 points. Let alpha = 0.02 and beta = 0.05. Calculate the sample size

    • 7 years ago
    The population mean grade is 78, with a standard deviation of 6 points
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