Aresearcher claims that the amounts of acetaminophen in a certain brand of cold tablets have a mean different from the 600mg claimed by the manufacturer. test this claim at the end 2% level of significance. the mean acetaminophen content for a random same of n = 46 tablets is 604.7 assume that the population standard deviation is 5mg.
a. since the test statistic is greater than the critical z, there is sufficient evidence to accept the null hypothesis and to support the claim that the mean content of acetaminophen is 600 mg.
b. since the test statistic is greater than the critical z, there is sufficient evidence to reject the null hypothesis and to support the claim that the mean content of acetaminophen is not 600 mg.
c. since the test statistic is less than the critical z, there is sufficient evidence to reject the null hypothesis and to support the claim that the mean content of acetaminophen is not 600 mg.
d. since the test statistic is greater than the critical z, there is insufficient evidence to reject the null hypothesis and to support the claim that the mean content of acetaminophen is not 600 mg.