29. (Requires probability.) Many opinion polls survey about 1,000 adults. Suppose that the sampling frame contains 100 million adults including yourself, and that an SR8 of 1,000 adults is chosen from the frame. (a) What is the probability that you are selected to be in the sample? (b) Now suppose that 2,000 such samples are selected, each sample selected indepen dently of the others. What is the probability that you will not be in any of the samples? (0) How many samples must be selected for you to have a 0.5 probability of being in at least one sample