It rains one-dollar bills on Pluto at an average rate of 24.3 bills per hour. (a) What is the probability that exactly 20 one-dollar bills will fall in the next hour? (b) What is the probability that exactly 77 one-dollar bills will fall in the next three hours? (c) What is the standard deviation of the number of one-dollar bills that will fall in the next hour?

It rains one-dollar bills on Pluto at an average rate of 24.3 bills per hour. (a) What is the probability that exactly 20 one-dollar bills will fall in the next hour? (b) What is the probability that exactly 77 one-dollar bills will fall in the next three hours? (c) What is the standard deviation of the number of one-dollar bills that will fall in the next hour?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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