Random Variables and

Distributions

TOPIC NAME

Central limit theorem: Sample

mean

Alcohol withdrawal Occurs when a person Who uses alcohol excessively suddenly stops the

alcohol use. Studies have shown that the onset of withdrawal is experienced a mean of 40 hours

after the last drink, with a standard deviation of 17 hours. A sample of 36 people who use alcohol

excessively is to be taken. What is the probability that the sample mean time between the last drink

and the onset of withdrawal will be 38.2 hours or less?

Carry your intermediate computations to at least four decimal places. Round your answer to at least

three decimal places.