Question: A certain nighttime cold medicine bears a label indicating the presence of 600 mg of acetaminophen in each fluid ounce of the drug. The Food and Drug Administration randomly selected 60 one-ounce samples and found that the mean acetaminophen content was 596 mg, and that the standard deviation was 10 mg. Use a = 0.01 and test the claim of the Pharmaceutical Company that the population mean is equal to 600 mg.

A. What are the null and alternative hypotheses for this study? To receive full credit you must write these claims both symbolically AND in English?

B. What is the critical z-value for this test?

C. What is the z-value based on the sample?

D. What is your decision about the pharmaceutical company's claim? On the average is there 600 mg of acetaminophen in each fluid one-ounce serving or not?