Mathematics, 15.04.2020 02:34, Schoolworkspace453

Suppose that we wish to test whether the population mean is greater than 80, where the population standard deviation is known to equal 20. Also, suppose that a random sample of 100 observations randomly selected has a mean equal to 84.

a. Formulate the null and alterative hypotheses.
b. Compute the p-value.
c. Using α =0.01, what is your conclusion?
d. Apply the critical value method when = 0.1.

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Suppose that we wish to test whether the population mean is greater than 80, where the population st...