anonymous
  • anonymous
Sixty percent of service calls regarding kitchen appliances involve a minor repair. For​ example, the customer did not read the instructions correctly or perhaps failed to connect the appliance correctly. These service calls cost ​$75. Service calls for major repairs are more expensive. Eighty percent of service calls for major repairs cost the customer ​$200 or more. What is the probability that a randomly selected service call costs ​$200 or​ more? The probability a randomly selected service call costs ​$200 or more is nothing. ​(Type an integer or a​ decimal.)
Mathematics
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
Sixty percent of service calls regarding kitchen appliances involve a minor repair. For​ example, the customer did not read the instructions correctly or perhaps failed to connect the appliance correctly. These service calls cost ​$75. Service calls for major repairs are more expensive. Eighty percent of service calls for major repairs cost the customer ​$200 or more. What is the probability that a randomly selected service call costs ​$200 or​ more? The probability a randomly selected service call costs ​$200 or more is nothing. ​(Type an integer or a​ decimal.)
Mathematics
jamiebookeater
  • jamiebookeater
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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kropot72
  • kropot72
|dw:1437342994266:dw| You can use the above probability tree to find the required probability.
kropot72
  • kropot72
|dw:1437343203097:dw| Multiply the two values of probability that are enclosed by the circle.
anonymous
  • anonymous
0.32

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kropot72
  • kropot72
Yes, that is the required probability.

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