Between 5:00 PM and 6:00 PM, cars arrive at McDonald's drive-thru at the rate of 20 cars

Question:

Between 5:00PMand 6:00 PM, cars arrive at McDonald's drive-thru at the rate of 20 cars per hour. The following formula from probability can be used to determine the probability that x cars will arrive between 5:00PM and 6:00PM.

-20 20*e P(x) x!


where

x! = x• (x – 1)·(x – 2) ).…· 3 •2 ·1 · 3


(a) Determine the probability that x = 15 cars will arrive between 5:00 PM and 6:00 PM.

(b) Determine the probability that x = 20 cars will arrive between 5:00 PM and 6:00 PM.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

Question Posted: