Solve the problem. Round results to the nearest hundredth.
-The mean of a set of data is 108.06 and its standard deviation is 115.45. Find the z score for a value of 489.67.
A) 3.31
B) 2.98
C) 3.61
D) 3.64

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Quizplus · Accepted Answer

The z score is calculated using the formula: z = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation. Substituting the given values: z = (489.67 - 108.06) / 115.45 = 3.31.

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