3. The lifetimes of interactive computer chips produced by a certain semiconductor manufacturer are normally distributed with parameters / = 1.4 * 10 hours and o = 4 * 10 hours. With Poisson approximation to the Binomial, find the approximate probability that a batch of 100 chips will contain at most 3 whose lifetimes are less than 6 * 105 hours? Give your answers to three decimal places