For this series of questions you will consider a large population of crabs in which 40% are infected with a parasitic worm.  Due to the large population, probabilities can be calculated as if we are sampling with replacement.  9d)What is the probability that if we take a sample of 7 crabs, 3 or 4 of them will be infected? 9e)What is the probability that if we take a sample of 7 crabs, more than 3 of them will be infected?

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