Perform a Hypothesis Test for the Population Mean

Essay

Perform a hypothesis test for the population mean. Assume that preliminary data analyses indicate that it is reasonable toapply the z-test. Use the critical-value approach.
-A researcher claims that the amounts of acetaminophen in a certain brand of cold tablets have a mean different from the 600 mg claimed by the manufacturer. Test this claim at the 2% level of significance. The mean acetaminophen content for a random sample of n = 48 tablets is 605 mg. Assume that the population standard deviation is 4.8 mg.