3. Customers at a gas station pay with a credit card (A), a debit card (B), or cash (C). Assume that successive customers make independent choices, with P(A) = 0.5, P(B) = 0.2, and P(C) = 0.3. (a) Among the next 200 customers, what are the mean and variance of the number who pay with a credit card? Explain your reasoning. (b) Answer part (a) for the number among the 200 who don't pay with cash.

3. Customers at a gas station pay with a credit card (A), a debit card (B), or cash (C). Assume that successive customers make independent choices, with P(A) = 0.5, P(B) = 0.2, and P(C) = 0.3. (a) Among the next 200 customers, what are the mean and variance of the number who pay with a credit card? Explain your reasoning. (b) Answer part (a) for the number among the 200 who don't pay with cash.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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