Customers at a gas station pay with a credit card (A), debit card (B), or cash (C).

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Customers at a gas station pay with a credit card (A), debit card (B), or cash (C). Assume that successive customers make independent choices, with , , and

a. Among the next 100 customers, what are the mean and variance of the number who pay with a debit card?

Explain your reasoning.

b. Answer part

(a) for the number among the 100 who don’t pay with cash.

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Related Book For book-img-for-question

Probability And Statistics For Engineering And The Sciences

ISBN: 9781133169345

8th Edition

Authors: Jay L Devore, Roger Ellsbury

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Question Posted: Sep 21, 2024 10:04 AM

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Customers at a gas station pay with a credit card (A), debit card (B), or cash (C).

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Probability And Statistics For Engineering And The Sciences

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