# Question: If the number of minutes it takes a service station

If the number of minutes it takes a service station attendant to balance a tire is a random variable having an exponential distribution with the parameter λ = 5, what are the probabilities that the attendant will take

(a) Less than 8 minutes to balance two tires;

(b) At least 12 minutes to balance three tires?

(a) Less than 8 minutes to balance two tires;

(b) At least 12 minutes to balance three tires?

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