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For a distribution of scores with = 82 and standard deviation = 2.5, find the following:
(Don't forget to sketch the normal curve to help you visualize what you are trying to find.)
A. What is the percentage of scores falling between the mean and a raw score of 84?
B. What is the probability of a score falling above a raw score of 86?
C. What is the probability of a score falling between the raw scores of 83 and 87?
D. The percentile rank of a score of 79.
E. The percentile rank of a score of 89.
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Examples of grouped, simple and frequency distribution data
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