Problem 1 -
An undergraduate business student has purchased a laptop computer for use during exams. This laptop is perfectly reliable except for two parts: its microchip, which has a failure rate of one in every 15 hours of operation; and its battery, which has a failure rate of one in every 30 hours of operation. Assuming that a new battery has just been installed, what is the probability that the battery will perform reliably during a 2 hour exam?
Problem 2 -
An undergraduate business student has purchased a laptop computer for use during exams. This laptop is perfectly reliable except for two parts: its microchip, which has a failure rate of one in every 30 hours of operation; and its battery, which has a failure rate of one in every 25 hours of operation. Assuming that a new battery has just been installed, what is the probability that the battery will FAIL during a 2 hourexam?
Problem 3 -
An undergraduate business student has purchased a laptop computer for use during exams. This laptop is perfectly reliable except for two parts: its microchip, which has a failure rate of one in every 20 hours of operation; and its battery, which has a failure rate of one in every 20 hours of operation. Assuming that a new battery has just been installed, what is the probability that the LAPTOP will FAIL during a 1 hourexam?