At a particular toll booth,20% of vehicles use transponders while the rest have their license plates scanned.Usually,150 vehicles pass this toll booth during any one hour time period.During the next hour,what is the probability that 20 or less vehicles will pass through using a transponder?
A)1.34%
B)0.08%
C)3.53%
D)98.65%

Question

Quizplus · Accepted Answer

The number of vehicles using transponders follows a binomial distribution with n = 150 and p = 0.2. We calculate the probability of 20 or fewer vehicles using a transponder using the cumulative binomial probability formula, which results in approximately 3.53%.

At a Particular Toll Booth,20% of Vehicles Use Transponders While