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QUESTION
A sample of 20 cigarettes is tested to determine nicotine content , and the average value observed was 1. If the sample variance is 0.
A sample of 20 cigarettes is tested to determine nicotine content , and the average value observedwas 1.2 mg. If the sample variance is 0.04 mg, compute a 99% confidence interval for the mean nicotine content.
