SOLUTION: 2. A cigarette manufacturer claims that the average nicotine content of their cigarette does not exceed by 3.4 mg. A random sample of 15 cigarettes was taken and found to have ave
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Question 1182428: 2. A cigarette manufacturer claims that the average nicotine content of their cigarette does not exceed by 3.4 mg. A random sample of 15 cigarettes was taken and found to have average nicotine content of 4.5 mg with SD of 1.5 mg. Are you going to accept the manufacturer’s claim at 0.01 level of significance?
You can put this solution on YOUR website! This is a 1-way t-test
critical value will be t (0.995, df=14)>2.602
t=(x bar-mean)/s/sqrt(n)
=1.1*sqtr(15)/1.5
=2.840
Reject Ho, sufficient evidence at this uncertainty level to reject Ho and not accept the manufacturer's claim.
p-value=0.0066
