Marcus reads in a magazine article that 62 of teenagers prefer Batman over Iron Man...
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Marcus reads in a magazine article that 62 of teenagers prefer Batman over Iron Man He decides to test this so he takes a simple random sample of 50 people at Wal Mart on a Saturday afternoon 1 1 What is the probability that he finds exactly 40 Batman fans 2 2 What is the probability that he finds fewer than 30 Batman fans 3 3 What is the probability that Marcus will find more than 35 Batman fans Suppose that 20 of the otters in a large aquatic community are typically infected with a parasite A biologist samples 16 otters at random and records whether or not the animal is infected 4 Find the expected number of infected otters in the sample 5 5 What is the probability exactly 4 of the sampled otters are infected 6 6 What is the probability that 8 or more of the sampled otters are infected
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