Question

The time to failure (in hours) of fans in a personal computer can be modeled by an exponential distribution with . Round your answers to 4 decimal places. (a) What proportion of fans will last at least 9000 hours?

Answer 1

Answer:

Step-by-step explanation:

Assuming the decay factor, m = 0.0005

f(x) = $1 - e^{-mx}$

f(9000) = $1 - e^{-0.0005*9000}$ =   1 - 0.0111 = 0.99