A company installs new central-heating furnaces and has found that for 15% of all installations, a return visit is needed to make some modifications. Six installations were made in a particular week. Assume independence of outcomes for these installations.a. What is the probability that a return visit will be needed in all these cases?b. What is the probability that a return visit will be needed in none of these cases?c. What is the probability that a return visit will be needed in more than 1 of these cases?
A company installs new central-heating furnaces and has found that for 15% of all installations, a return visit is needed to make some modifications. Six installations were made in a particular week. Assume independence of outcomes for these installations.a. What is the probability that a return visit will be needed in all these cases?b. What is the probability that a return visit will be needed in none of these cases?c. What is the probability that a return visit will be needed in more than 1 of these cases?
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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A company installs new central-heating furnaces and has found that for 15% of all installations, a return visit is needed to make some modifications. Six installations were made in a particular week. Assume independence of outcomes for these installations.
a. What is the probability that a return visit will be needed in all these cases?
b. What is the probability that a return visit will be needed in none of these cases?
c. What is the probability that a return visit will be needed in more than 1 of these cases?
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