Are events S and W independent? Explain your answer to the previous question using the probability formula. In Grocerytown there are seven supermarkets. • Past research has shown that out of 100 typical customers shopping in person at noon on Monday: 5 are shopping at store 1 20 at store 2 О 5 at store 3 о 25 at store 4 ○ 15 at store 5 ○ 10 at store 6 20 at store 7 Stores 1,4 and 6 are Safeway stores. Stores 2, 3, 5 and 7 are Whole Foods stores. • Stores 2, 4 and 7 are located downtown. • • • Assume that one customer is chosen at random and that a customer only shops at one store. (We are talking about physical shopping at the store at a particular point in time, so a customer can only shop at one store. Outcome E; refers to the random customer shopping at store i. Event S means that the customer shops at a Safeway store. Event W means that the customer shops at a Whole Foods store. Event D means that the customer shops at a store located downtown.

Managerial Economics: Applications, Strategies and Tactics (MindTap Course List)
14th Edition
ISBN:9781305506381
Author:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Publisher:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Chapter5: Business And Economic Forecasting
Section: Chapter Questions
Problem 3.3CE
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Are events S and W independent?
Explain your answer to the previous question using the probability formula.
Transcribed Image Text:Are events S and W independent? Explain your answer to the previous question using the probability formula.
In Grocerytown there are seven supermarkets.
•
Past research has shown that out of 100 typical customers shopping in person at noon on
Monday:
5 are shopping at store 1
20 at store 2
О
5 at store 3
о
25 at store 4
○
15 at store 5
○
10 at store 6
20 at store 7
Stores 1,4 and 6 are Safeway stores.
Stores 2, 3, 5 and 7 are Whole Foods stores.
•
Stores 2, 4 and 7 are located downtown.
•
•
•
Assume that one customer is chosen at random and that a customer only shops at one
store. (We are talking about physical shopping at the store at a particular point in time, so
a customer can only shop at one store.
Outcome E; refers to the random customer shopping at store i.
Event S means that the customer shops at a Safeway store.
Event W means that the customer shops at a Whole Foods store.
Event D means that the customer shops at a store located downtown.
Transcribed Image Text:In Grocerytown there are seven supermarkets. • Past research has shown that out of 100 typical customers shopping in person at noon on Monday: 5 are shopping at store 1 20 at store 2 О 5 at store 3 о 25 at store 4 ○ 15 at store 5 ○ 10 at store 6 20 at store 7 Stores 1,4 and 6 are Safeway stores. Stores 2, 3, 5 and 7 are Whole Foods stores. • Stores 2, 4 and 7 are located downtown. • • • Assume that one customer is chosen at random and that a customer only shops at one store. (We are talking about physical shopping at the store at a particular point in time, so a customer can only shop at one store. Outcome E; refers to the random customer shopping at store i. Event S means that the customer shops at a Safeway store. Event W means that the customer shops at a Whole Foods store. Event D means that the customer shops at a store located downtown.
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