The lifetime of light bulbs produced by a company are normally distributed with mean 1500 hours and standard deviation 125 hours.

(c) If three new bulbs are installed at the same time, what is the probability that exactly two will be burning after 1400 hours?

(d) If three new bulbs are installed at the same time, what is the probability that at least two will be burning after 1400 hours?

Enter your answer as a decimal, not a percentage. Round to four decimal places.