The probability that a motorist will use a credit card for gas purchases at a large service station on the Trans Canada Highway is 7/8. If eight cars pull up to the gas pumps, what is the probability that: (b) four of them will use a credit card? (a) seven of them will use a credit card?

The probability that a motorist will use a credit card for gas purchases at a large service station on the Trans Canada Highway is 7/8. If eight cars pull up to the gas pumps, what is the probability that: (b) four of them will use a credit card? (a) seven of them will use a credit card?

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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Question

The probability that a motorist will use a credit card for gas

purchases at a large service station on the Trans Canada

Highway is 7/8. If eight cars pull up to the gas pumps, what is the

probability that:

(b) four of them will use a credit card?

(a) seven of them will use a credit card?

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