Answer
Prediction in part (a) was made to find the confidence interval for the mean nicotine content of all cigarettes whose tar content is 12 mg.
Prediction in part (c) was made to predict the interval of the nicotine content of a randomly selected cigarette whose tar content is 12 mg. The interval obtained is the same for any cigarette whose tar content is 12 mg.
Work Step by Step
Given above.
