i) The family has 5 children. If probability of birth of either sex is assumed equally likely, find probability that exactly 4 of the children are boys?
ii) Assume that the die is made by marking faces of regular dodecahedron with numbers 1 through 12. Find proabablity that one exactly three of six tosses, a number less than 4 turns up?
iii) Suppose that probablity that the married couple will get divorce within next ten years is 1/5. Provided eight randomly selected couples, determine proabability that all eight will have same partners after ten years.
iv) The urn has 3 red balls and 2 white balls. The ball is drawn, then replaced. Compute probability that white ball will be drawn 4 times in row.