Distribution of scores with and the standard deviation = 6.38. Draw a small picture to help you see what is required.
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What is the probability of a score falling between a raw score of 70 and 80?
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What is the probability of a score falling above a raw score of 80?
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What is the probability of a score falling between a raw score of 81 and 83?
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What is the probability of a score falling below a raw score of 63?
Jake needs to score in the top 10% in order to earn a physical fitness certificate. The class mean is 78 and the standard deviation is 5.5. What raw score does he need?