#01. The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 8 months. Find the probability that a random sample of 30 smoke...

#01.  The average lifetime of smoke detectors that a company manufactures is 5 years, or 60
months, and the standard deviation is 8 months. Find the probability that a random sample of 30 smoke
detectors will have a mean lifetime between 58 and 63 months.