If x̄ = 1 and s² = 9 and scores are normally distributed, what is the percentile rank of x = 4? A) 16th B) 84th C) 34th D) 68th

Name: If x̄ = 1 and s 2 = 9 and scores are normally distributed, what is the percentile rank of x = 4? A) 16th B) 84th C) 34th D) 68th
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Quizplus · Accepted Answer

The mean (x̄) is 1 and the variance (s²) is 9, so the standard deviation (s) is 3. The z-score for x = 4 is (4 - 1) / 3 = 1. A z-score of 1 corresponds to the 84th percentile in a standard normal distribution.

If X̄ = 1 and S2 = 9 and Scores

If X̄ = 1 and S² = 9 and Scores