Birth days. During a 2-month period in 2002, 72 babies were born at the Tompkins Community Hospital in up-state New York. The table shows how many babies were born on each day of the week. a) If births are uniformly dis-tributed across all days of the week, how many would youexpect on each day?b) Only 7 births occurred on aMonday. Does this indicate thatwomen might be less likelyto give birth on a Monday?Explain.c) Are the 17 births on Tuesdaysunusually high? Explain.d) Can you think of any reasons why births may notoccur completely at random? Day BirthsMon. 7Tues. 17Wed. 8Thurs. 12Fri. 9Sat. 10Sun. 9

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Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.