Question: For the following problems, identify distributions you would need to use in order to answer research questions. Justify your answer (no computations needed).

A. It has been observed that the average number of traffic accidents requiring medical assistance on the Hollywood Freeway between 7 and 8 PM on Wednesday mornings is 1. What, then, is the chance that there will be a need for exactly 2 ambulances on the Freeway during that time slot on any given Wednesday morning?

B. A certain drug is known to cause a side effect 10% of the time. If 5 patients are given the drug, what is the probability that 4 or more experience the side effect?

C. A new drug showed promising effects of reducing headache. You would like to replicate the findings in your clinic. In your data base you identified 50 patients suffering from chronic headache: 40 women, and 10 men. You would like to randomly select 15 of them for your experiment. What is the probability that you will select 8 women and 7 men?

D. According to one source, College suicide rates for 2003 were 1 per ten thousand students. Suppose that Reno College, with 25,000 students, has 4 suicides in 2003. Will the Dean investigate the possibility of a local, nonrandom factor?

E. What is the probability of giving a birth to 2 boys out of 5 children if the probability of having a boy is .51 at each birth?