1a)

Cars arriving for gasoline at a Shell station follow a Poisson distribution with a mean of 10 per hour.

A. Determine the probability that over the next hour, only one car will arrive.

Probability =

B. Compute the probability that in the next 3 hours, more than 20 cars will arrive.

Probability =

1b)

The number of accidents that occur at a busy intersection is Poisson distributed with a mean of 3.3 per week. Find the probability of the following events.

A. No accidents occur in one week.

Probability =

B. 8 or more accidents occur in a week.

Probability =

C. One accident occurs today.

Probability =