Using the 50-34-14 figures approximately what percentage of, Ask an Expert

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Suppose the people living in a city have a mean score of 40 and a standard deviation of 5 on a measure of concern about the environment. Assume that these concern scores are normally distributed. Using the 50%-34%-14% figures, approximately what percentage of people have a score a) above 40 b) above 45 c) above 30 d) below 45 g) below 30.

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