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Use z-scores to determine who had a more disappointing quiz mark: Alan had a mark of 8.5 on a quiz for which the mean mark
Use z-scores to determine who had a more disappointing quiz mark: Alan had a mark of 8.5 on a quiz for which the mean mark was 10.1 and the standard deviation was 2.5. Belle had mark of 9.0 on a quiz for which the mean was 9.9 and the standard deviation was 1.5
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