Total area under a frequency curve
Three squares inches out of the total area under a frequency curve of 12 square inches falls below a score of 68. If the curve is based on a total of 80 cases, how many cases fall below a score of 68?
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Three squares inches out of total area under frequency curve of 12 square inches falls below score of 68. If the curve is based upon a total of 80 cases, how many cases fall below score of 68?
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