Question: The probability that a consumer testing service will rate a new antipollution device for cars very poor, poor, fair, good, very good, or excellent are

The probability that a consumer testing service will rate a new antipollution device for cars very poor, poor, fair, good, very good, or excellent are 0.07, 0.12, 0.17, 0.32, 0.21, and 0.11. What are the probability that it will rate the device very poor, poor, fair, or good?

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