Math 115 Quiz 4Spring 08Name-1

# Math 115 Quiz 4Spring 08Name-1 - Math 115 Quiz 4 Spring 08...

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Math 115 Quiz 4 Spring 08 Name:____________________ Exercise 1 – By referring to the specific differences between observational studies and experiments, determine whether each of the following is an observational study or an experiment. You must explain your answer. 2 Points Each A. A researcher collects a random sample of Ohioans and identifies who does and does not eat apples regularly. The researcher monitors them for six months and records how often the subjects visit a doctor. B. A researcher collects a random sample of Ohioans, randomly assigns half of them to eat an apple a day and the other half are directed to avoid apples. The researcher monitors them for six months and records how often the subjects visit a doctor. Exercise 2 – Different types of writing can sometimes be distinguished by the lengths of the words used. A student interested in this fact wants to study the lengths of words used by Tom Clancy in his novels. She opens a Clancy novel ant random and records the

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Math 115 Quiz 4Spring 08Name-1 - Math 115 Quiz 4 Spring 08...

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