Solved: If the mean score is 150 with a standard deviation of 30, Basic Statistics

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If the mean score is 150 with a standard deviation of 30

A certain diagnostic test is indicative of problems only if a child scores in the lowest 10% of those taking the test (the 10th percentile). If the mean score is 150 with a standard deviation of 30, what would be the diagnostically meaningful cutoff?

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Basic Statistics: If the mean score is 150 with a standard deviation of 30

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Basic Statistics: If the mean score is 150 with a standard deviation of 30

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