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For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?