Question

A machine manufactures 300 micro-chips per hour. The probability for a chip to be faulty is 0.01. Find the probability that more than 3 faulty chips are manufactured in an hour.

Answer 1

The average number of faulty chips per hour is 300 * 0.01 = 3 chips
Assuming the distribution of the number of failures per hour is symmetrical, the probability that more than 3 faulty chips are manufactured in an hour is 0.5