[Answer] A police officer is using a radar device to check motorists’ speeds. Prior to beginning the speed check the officer estimates that 40 percent of motorists will be driving more than 5 miles per hour over the speed limit. Assuming that the police officer’s estimate is correct what is the probability that among 4 randomly selected motorists the officer will find at least 1 motorist driving more than 5 miles per hour over the speed limit?

Answer: 0.8704
A police officer is using a radar device to check motorists’ speeds. Prior to beginning the speed check the officer estimates that 40 percent of motorists will be driving more than 5 miles per hour over the speed limit. Assuming that the police officer’s estimate is correct what is the probability that among 4 randomly selected motorists the officer will find at least 1 motor…

Leave a Reply