Assume that a normal distribution of data has a mean of 19 and a standard deviation of 4. Use the empirical rule to find the percentage of values that lie below 7.
Added by Michelle S.
Step 1
Step 1: Calculate the z-score for the value x = 7 using the formula z = (x - μ) / σ z = (7 - 19) / 4 z = -12 / 4 z = -3 Show more…
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