Twenty sharpened pencils are placed in a box containing an unknown number of unsharpened pencils. suppose 15 pencils are removed at random and five of the removed pencils are sharpened. based on this, is it reasonable to assume that the number of unsharpened pencils was 40?

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.