1.For each situation, state the distribution that should be used and any parameters of the problem that are given distribution (e.g., n, k, p, , , , etc.). Do not solve!

a.In a small Norwegian town, an average of 5 tourists arrive at the visitor center per hour. Find the probability that at least 2 tourists arrive in an hour.

b.In a small Norwegian town, an average of 5 tourists arrive at the visitor center per hour.Find the probability that there is at least 20 minutes between tourist arrivals.

c.Visitors to a museum are randomly selected for security screening. The probability of being randomly selected for inspection is 0.25. What is the probability that 4 of the next 10 visitors are selected for screening?

d.In a box of 25 envelopes, 5 contain a prize and 20 do not contain a prize. What is the probability that, if you pick 6 of the envelopes without replacement, you will get exactly one prize?