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  3. 1 in a study of fatal car accidents some accidents...

Question: 1 in a study of fatal car accidents some accidents...

Question details

1. In a study of fatal car accidents, some accidents were attributed to high speed or drunk driving.

  1. The probability that the fatality was attributed to high speeds was 0.57.

  2. The probability that the fatality was attributed to drunk driving was 0.62.

  3. The probability that high speed and drunk driving caused the accident was 0.41.

  1. [2 pts] What is the probability that a fatal accident will be attributed to high speeds or drunk driving?

  2. [2 pts] What is the probability that a fatal accident will be attributed to neither cause?

  3. [2 pts] What is the probability that the fatality will be attributed to drunk driving, but not high speeds?


2. 1522 customers at a major retailer were surveyed whether or not they made a

purchase and were satisfied with the service they received. The table below organizes the responses.

Satisfied with Service

Not Satisfied with Service

Total

Made a Purchase

130

494

624

Did Not Make a Purchase

715

183

898

Total

845

677

1522

  1. [2 pts] What is the probability that a shopper selected at random made a purchase, given that they were not satisfied with the service? Write your answer as a fraction.

  2. [2 pts] What is the probability that a shopper selected at random was not satisfied with the service, given that they made a purchase? Write your answer as a fraction.

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