Question

Seventy 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. More than one-half of service calls for major repairs cost the customer +200 or more. What’s the probability that a randomly selected service call costs +200 or more?


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  • CreatedJuly 14, 2015
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