# Question

A tollbooth operator has observed that cars arrive randomly at an average rate of 360 cars per hour.

a. What is the mean time between car arrivals at this tollbooth?

b. What is the probability that the next car will arrive within ten seconds?

a. What is the mean time between car arrivals at this tollbooth?

b. What is the probability that the next car will arrive within ten seconds?

## Answer to relevant Questions

The car speeds on a certain stretch of the interstate highway I-95 are known to be normally distributed with a mean of 72 and a standard deviation of 15. You have just heard a policeman comment that about 3% of the drivers ...A variety of packaging solutions exist for products that must be kept within a specific temperature range. A cold chain distribution is a temperature-controlled supply chain. An unbroken cold chain is an uninterrupted series ...A random sample is drawn from a population with mean µ =66 and standard deviation σ =5.5. a. Comment on the sampling distribution of the sample mean with n=16 and n=36. b. Can you use the standard normal distribution to ...A small hair salon in Denver, Colorado, averages about 30 customers on weekdays with a standard deviation of 6. It is safe to assume that the underlying distribution is normal. In an attempt to increase the number of weekday ...According to a recent FCC survey, one in six cell phone users has experienced "bill shock" from unexpectedly high cell phone bills (Tech Daily Dose, May 26, 2010). a. Discuss the sampling distribution of the sample ...Post your question

0