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5. Assume that the lifetime of a certain type and brand of TV is exponentially distributed with mean 8 years. A. What's the probability a

5. Assume that the lifetime of a certain type and brand of TV is exponentially distributed with mean 8 years.

A. What's the probability a TV of this type and brand lasts longer than 6 years?

B. What's the probability a TV of this type and brand less than 7 years?

C. How long do 90% of TVs of this type and brand last?

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