Suppose that the probability that a particular computer chip fails after t = a hours of operation is 0.00007 e -0.00007tat. a a. Find the probability that the computer chip fails after 16,000 hr of operation (that is, the chip lasts at least 16,000 hr). b. Of the chips that are still in operation after 16,000 hr, what fraction of these will operate for at least another 16,000 hr? 00 c. Evaluate 0.00007 | e - 0.00007 at and interpret its meaning