Three urns (A,B,C) hold white, red and black beads.
white, red, black
A 10, 5, 10
B 8, 8, 4
C 5, 5, 5
You choose an urn at random and take two beads out of this urn (without putting anyone of them back).
You have a black and a white bead. What is the probability that you choose urn A?
Decide the value of k so the function becomes the density function for the random variable .
Then calculate . (Rayleigh distribution)
On average, 5.2 hurricanes occur in a year. What is the probability three or less will occur this year?
We can assume that the number of hurricanes can be approximated with a Poisson random variable.