(a) Among the next 100 customers, what are the mean and variance of the number who pay with a debit card? customers customers2 mean make independent choices with P(A) 0.3, P(B) = 0.2, variance Explain your reasoning. O Because we are interested in whether or not a debit card was used, we can use the binomial distribution. X = the probability that a customer used a debit card. O Because we are interested in whether or not a debit card was used, we can use the binomial distribution. X = the number of customers at the gas station. O Because we are interested in whether or not a debit card was used, we can use the binomial distribution. X = the number of customers who use a debit card.

(a) Among the next 100 customers, what are the mean and variance of the number who pay with a debit card? customers customers2 mean make independent choices with P(A) 0.3, P(B) = 0.2, variance Explain your reasoning. O Because we are interested in whether or not a debit card was used, we can use the binomial distribution. X = the probability that a customer used a debit card. O Because we are interested in whether or not a debit card was used, we can use the binomial distribution. X = the number of customers at the gas station. O Because we are interested in whether or not a debit card was used, we can use the binomial distribution. X = the number of customers who use a debit 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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