Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 14. Using the empirical rule, what percentage of IQ scores are between 86 and 114
Added by Mikayla W.
Step 1
To find the z-score, we use the formula: z = (x - μ) / σ For x = 86: z1 = (86 - 100) / 14 = -14 / 14 = -1 For x = 114: z2 = (114 - 100) / 14 = 14 / 14 = 1 Show more…
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