The next four questions are based on the following information. At a car wash station, on average, there are 4 cars coming in for the service every 10 minutes. The average wash time is 2 minutes. The Poisson distribution is appropriate for the arrival rate and service times are exponentially distributed. Please convert all rates into cars per hour and answer the following questions.

Question 1 of 4

5.0 Points

The average time a car spent in the waiting line is hours, and the total time a car spent in this car wash station is hour. (Please round to two decimal points and include no units.) Mark for Review What's This?

Question 2 of 4

3.0 Points

The average number of cars in this car wash station is . (Please round to the closest integer and include no units.) Mark for Review What's This?

Question 3 of 4

5.0 Points

The probability that there are no cars in this station is . (Please round to one decimal points and include no units.) Mark for Review What's This?

Question 4 of 4

5.0 Points

The probability that there are exactly two cars in this station is . (Please round to three decimal points and include no units.)