You find a z-score of -1.99. Which statement(s) is/are true?
The standard deviation of the test is negative.
1.99 people scored higher than the person in question.
The score lies almost two standard deviations from the mean.
The score falls below the mean score.
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To start, assign the variables to unknowns, known values to constants, and relate them by the relations between the variables and constants.
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