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Suppose a random sample of n = 49 observations is selected from a population that has normal distribution with mean 106 and standard deviation 12.
a) Give the mean and the standard deviation of the sample mean X.
b) Find the probability that X (the mean) exceeds 110.
c) Find the probability that the sample mean deviates from the population mean by less than 4
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Develop a regression model to predict Costsbased on the Level of Productionand compare it to the dispersion obtained from the table above.
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The Office of the Privacy Commissioner of Canada's (OPC) Contributions Program is interested in reaction to a proposal
Determine whether such subjects do better, on the average, than expected by just guessing and perform the statistical test
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