Question

ILAW Manufacturing company produces bulbs that last a mean of 900 hours with a standard
deviaticn of 110 hours. What is the probability that the mean lifetime of a random sample of 15 of
these bulbs is less than 850 hours?​

Answer 1

Answer:

ILAW Manufacturing company produces bulbs that last a mean of 900 hours with a standard deviation of 110 hours. what is the probability that the mean lifetime of a random sample of 15 of these bulbs is less than 850 hours? \mu=900\ hrs, \sigma=110\ hrs, n=15