If x̄ = 2 and s² = 4 and scores are normally distributed, what proportion of scores fall above x = 4? A) .1587 B) .3085 C) .6915 D) .8413

Name: If x̄ = 2 and s 2 = 4 and scores are normally distributed, what proportion of scores fall above x = 4? A) .1587 B) .3085 C) .6915 D) .8413
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Quizplus · Accepted Answer

The z-score for x = 4 is (4 - 2) / 2 = 1. The proportion of scores above a z-score of 1 in a standard normal distribution is approximately 0.1587.

If X̄ = 2 and S2 = 4 and Scores

If X̄ = 2 and S² = 4 and Scores