# Question

Hybrid car batteries have an estimated average life of eight years. Using this average, if battery life has an exponential distribution, how likely is it that a random hybrid battery will have a life of

a. At least 6 years?

b. Between 7 and 9 years?

c. Less than 5 years?

a. At least 6 years?

b. Between 7 and 9 years?

c. Less than 5 years?

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