stion 3 The lifetime X of a certain electronic component is an vet vered exponential random variable with a mean of 5 hours. Assuming 3 of these components operate independently in a ed out of device. The device operates if all components operate. ag Find the probability that the lifetime of any electronic stion component is at least 3 hours. [The answer should be a number rounded to five decimal places, don't use symbols such as %] Find the probability that the device operates for at least 3 hours. [The answer should be a number rounded to five decimal places, don't use symbols such as "]