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 P(A) = 0.3, P(B) = 0.1, and P(C) = 0.6. (a) Among the next 100 customers, what are the mean and variance of the number who pay with a debit card? mean variance (b) Answer part (a) for the number among the 100 who don't pay with cash. mean variance
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 P(A) = 0.3, P(B) = 0.1, and P(C) = 0.6. (a) Among the next 100 customers, what are the mean and variance of the number who pay with a debit card? mean variance (b) Answer part (a) for the number among the 100 who don't pay with cash. mean variance
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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 P(A) = 0.3, P(B) = 0.1, and P(C) = 0.6.
(a) Among the next 100 customers, what are the mean and variance of the number who pay with a debit card?
(b) Answer part (a) for the number among the 100 who don't pay with cash.
| mean | |
| variance |
(b) Answer part (a) for the number among the 100 who don't pay with cash.
| mean | |
| variance |
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