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I've tried to do the problem below using Excel, specifically Megastat. I must not be doing it right. Could you please help me using an Excel format
A normal population has a mean of 80.0 and a standard deviation of 14.0.
a. Compute the probability of a value between 75.0 and 90.0.
b. Compute the probability of a value 75.0 or less.
c. Compute the probability of a value between 55.0 and 70.0.
Calculate the population mean and population standard deviation.
Steve then conducts a one-sample t-test on the data, knowing that there is an established mean for the publication of others that have taken this test of 6.
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