To help consumers assess the risks they are taking, the Food and Drug Administration (FDA)

publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette has

recently been marketed. From a sample of 91 cigarettes, the FDA tests on this cigarette gave a

mean nicotine content of 26.2 milligrams and standard deviation of 2.6 milligrams.

Calculate the 98% confidence interval for the amount of nicotine found in all commercial brands

of cigarettes?

asked by guest
on Oct 22, 2024 at 4:07 pm



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