μandthenfails. a repair crew checks the machine at times distributed according to a poisson process with rate λ; if the machine is found to have failed then it is immediately replaced. find the expected time between replacements of machines.

Step-by-step explanation:

If a machine is replaced at some time t, then the expected time until next failure is

and the time between the checks is exponentially distributed with rate \lambda, the expected time until next failure is  

Because of memory less property of the exponential  The answer is

i will pick c put check it over to be sure

step-by-step explanation:

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x