Question

STAT 130 An advanced sorting equipment processes mails, one at a time. The processing times, in milliseconds, of different mails are independent and uniformly distributed [10, 70]. Use the Central Limit Theorem to approximate the probability that the number of mails processed with 3300 milliseconds is at least 75. Rewrite the event in terms of the time Y, in milliseconds, until the first 75 mails are processed.

Answer 1