The waiting time, in hours, between successive speeders spotted by a radar unit is a continuous ran- dom variable with a cumulative distribution function f(x)= 0, x< 0, 1−e−4x, x≥0. find the probability of waiting fewer than 12 minutes between successive speeders.

0.5507

Step-by-step explanation:

Given : The waiting time, in hours, between successive speeders spotted by a radar unit is a continuous random variable X with a cumulative distribution function

Since , the waiting time is in hours , then we can write 12 minutes as hour i.e.0.2 hour.

Now, the probability of waiting fewer than 12 minutes between successive speeders is given by :-

Hence, the required probability = 0.5507

asdsaddsa

step-by-step explanation:

ratio is 2 : 9

the answer is three

13.5 : 3