1. A majority verdict of 10-2 or better may be permitted in a jury trial. Assuming each juror has probability 0.9 of reaching a Guilty verdict, and decides independently, what is the probability the jury decides to convict?
2. For both the Gamma and Beta distribution, find the value of x that maximizes the density function. When is there just one local maximum?
3. The Logarithmic distribution has been used in ecology to model how often any particular species appears in a habitat. Its pgf is of the form cln(1 - qz), where c is a constant and 0 < q < 1. Find c in terms of the parameter q, and write down the expression fo pk, the chance a species is located k times.
(Partial solution provided in attachment)
4. Eleven horses enter a race. Mr C takes exactly 60 second to complete the course. Each of the other ten horses, independently, takes more than 60 seconds with probability p, or less than 60 seconds with probability 1 - p. Give a model for Mr C's position in the race. Find the chances that he wins, and he is placed (i.e. in the first three). Find the value of p that makes all eleven horses equally likely to win. For this value of p, find the chance Mr C is placed. Is it a surprise that your last answer is not 3/11?