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Probability: Vehicle Type

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Vehicle type Lower Class Middle Class Upper Class Total
Toyota Sienna 3 53 71 127
Honda Odyssey 2 34 77 113
Dodge Grand Caravan 62 11 7 80
Total 67 98 155 320

A. If we select one person at random, what is the probability that person drives a Toyota Sienna?

B. If we select one person at random, what is the probability that person is in the lower or upper class?

C. If we select a person at random, what is the probability that person is in the upper class or drives a Dodge Grand Caravan?

D. If we select two people at random, what is the probability that both of them drive a Toyota Sienna and are from the middle class?

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Solution Summary

The solution provides step by step method for the calculation of probabilities. Formula for the calculation and Interpretations of the results are also included.

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Answer

P (the person drives a Toyota Sienna) = f/n

= 127/320

= 0.396875

B. If we select one person at random, what is the probability that person is in the lower or upper class?

Answer

Let A and B be the events that the person is in the lower and upper class respectively. Then,

P (the person is in the lower or upper class) = P ...

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