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Question: (Requires probability.) A typical opinion poll surveys about 1000 adults. Suppose the sampling frame contains 100 million adults, including yourself, and that an SRS of 1000 adults is chosen from the frame without replacement.

a. What is the probability that you are selected to be in the sample?

b. Now suppose that 2000 such samples are selected, each sample selected independently of the others. What is the probability that you will not be in any of the samples?

c. How many samples must be selected for you to have a .5 probability of being in at least one sample?

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