Answers
Ans:
Test statistic:
z=(605-600)/(4.8/sqrt(48))
z=7.22
critical z value=+/2.326
(rejection region:z<-2.326 or z>2.326)
As,test statistic falls in rejection region,we reject H0.
There is sufficient evidence to support the claim that the amounts of acetaminophen in a certain brand of cold tablets have a mean different from the 600 mg
Ho: 600
H 600 a
.
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