The test scores for the Stanford-Binet Intelligence Scale are normally distributed with a mean score of 100
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The test scores for the Stanford-Binet Intelligence Scale are normally distributed with a mean score of 100 and a standard deviation of 16.
The test scores of four students selected at random are 98, 65, 106, and 124.
In Exercises 39 and 40,
(a) find the z-score that corresponds to each value and
(b) determine whether any of the values are unusual.
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