National Welding Company uses industrial robots in some of its assembly-line operations. Management has determined that the lengths of time in hours between breakdowns are exponentially distributed with probability density function .
What is the probability that a robot selected at random will break down between 400 and 500 hr of use? Round your answer to the nearest hundredth.

A) 0.06
B) 0.30
C) 0.15
D) 0.79
E) 0.51

Question

National Welding Company uses industrial robots in some of its assembly-line operations. Management has determined that the lengths of time in hours between breakdowns are exponentially distributed with probability density function  . ​
What is the probability that a robot selected at random will break down between 400 and 500 hr of use? Round your answer to the nearest hundredth.
​
A) 0.06 
B) ​0.30 
C) ​0.15 
D) ​0.79 
E) ​0.51

Quizplus · Accepted Answer

The Answer of National Welding Company uses industrial robots in some of its assembly-line operations. Management has determined that the lengths of time in hours between breakdowns are exponentially distributed with probability density function  . ​
What is the probability that a robot selected at random will break down between 400 and 500 hr of use? Round your answer to the nearest hundredth.
​
A) 0.06 
B) ​0.30 
C) ​0.15 
D) ​0.79 
E) ​0.51

National Welding Company Uses Industrial Robots in Some of Its