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Šome customers of a retail chain have a store credit card that earns them bonus gifts when they make purchases at the chain. Currently, 20 customers are shopping in a store in this chain. Of these, half already have a store credit card. If employees offer store credit cards to 6 of these, what the probability that all of those chosen already have a card? Complete parts (a) through (e) below. (a) Explain why it would not be appropriate to use a binomial model for the number of customers who already have a store credit card, among the 6 customers who were chosen. O A. The number who already have a card in the 6 customers who were offered a store credit card meets all of the conditions for using a binomial model. O B. There are not two possible outcomes for each trial involved in randomly selecting the 6 customers who were offered a store credit card. C. The subset of the 6 customers who were offered a store credit card is too large and violates the 10% condition. O D. The number who already have a card in the 6 customers who were offered a store credit card is not a random variable. (b) A family of 6 is shopping in the store. Noting that „C, gives the number of ways of picking a subset of x items out of n, what is the probability that the 6 randomly selected shoppers are in this family? The probability that the 6 randomly selected shoppers are in this family is 0.0000258 . (Round to seven decimal places as needed.) (c) How many possible subsets of those already having a card might the employees select? There are possible subsets. (Simplify your answer.)

Šome customers of a retail chain have a store credit card that earns them bonus gifts when they make purchases at the chain. Currently, 20 customers are shopping in a store in this chain. Of these, half already have a store credit card. If employees offer store credit cards to 6 of these, what the probability that all of those chosen already have a card? Complete parts (a) through (e) below. (a) Explain why it would not be appropriate to use a binomial model for the number of customers who already have a store credit card, among the 6 customers who were chosen. O A. The number who already have a card in the 6 customers who were offered a store credit card meets all of the conditions for using a binomial model. O B. There are not two possible outcomes for each trial involved in randomly selecting the 6 customers who were offered a store credit card. C. The subset of the 6 customers who were offered a store credit card is too large and violates the 10% condition. O D. The number who already have a card in the 6 customers who were offered a store credit card is not a random variable. (b) A family of 6 is shopping in the store. Noting that „C, gives the number of ways of picking a subset of x items out of n, what is the probability that the 6 randomly selected shoppers are in this family? The probability that the 6 randomly selected shoppers are in this family is 0.0000258 . (Round to seven decimal places as needed.) (c) How many possible subsets of those already having a card might the employees select? There are possible subsets. (Simplify your answer.)

MATLAB: An Introduction with Applications
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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Some customers of a retail chain have a store credit card that earns them bonus gifts when they make purchases at the chain. Currently, 20 customers are shopping in a store in this chain. Of these, half already have a store credit card. If employees offer store credit cards to 6 of these, what is the probability that all of those chosen already have a card? Complete parts (a) through (e) below. (a) Explain why it would not be appropriate to use a binomial model for the number of customers who already have a store credit card, among the 6 customers who were chosen. O A. The number who already have a card in the 6 customers who were offered a store credit card meets all of the conditions for using a binomial model. O B. There are not two possible outcomes for each trial involved in randomly selecting the 6 customers who were offered a store credit card. Vc. The subset of the 6 customers who were offered a store credit card is too large and violates the 10% condition. O D. The number who already have a card in the 6 customers who were offered a store credit card is not a random variable. (b) A family of 6 is shopping in the store. Noting that „C, gives the number of ways of picking a subset of x items out of n, what is the probability that the 6 randomly selected shoppers are in this family? The probability that the 6 randomly selected shoppers are in this family is 0.0000258. (Round to seven decimal places as needed.) (c) How many possible subsets of those already having a card might the employees select? There are possible subsets. (Simplify your answer.)
Transcribed Image Text:Some customers of a retail chain have a store credit card that earns them bonus gifts when they make purchases at the chain. Currently, 20 customers are shopping in a store in this chain. Of these, half already have a store credit card. If employees offer store credit cards to 6 of these, what is the probability that all of those chosen already have a card? Complete parts (a) through (e) below. (a) Explain why it would not be appropriate to use a binomial model for the number of customers who already have a store credit card, among the 6 customers who were chosen. O A. The number who already have a card in the 6 customers who were offered a store credit card meets all of the conditions for using a binomial model. O B. There are not two possible outcomes for each trial involved in randomly selecting the 6 customers who were offered a store credit card. Vc. The subset of the 6 customers who were offered a store credit card is too large and violates the 10% condition. O D. The number who already have a card in the 6 customers who were offered a store credit card is not a random variable. (b) A family of 6 is shopping in the store. Noting that „C, gives the number of ways of picking a subset of x items out of n, what is the probability that the 6 randomly selected shoppers are in this family? The probability that the 6 randomly selected shoppers are in this family is 0.0000258. (Round to seven decimal places as needed.) (c) How many possible subsets of those already having a card might the employees select? There are possible subsets. (Simplify your answer.)
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