# Assume that all the distributions are normal, average is always taken to be the arithmetic mean x^- or mu. Which of these students scored below mean?

Assume that all the distributions are normal, average is always taken to be the arithmetic mean xˉ or &mu;. A college Physical Education Department offered an Advanced First Air course last semester. The scores on the comprehensive final exam were normally distributed, and the the z scores for some of the students are shown below:

Robert, 1.11

Juan, 1.66

Susan, &ndash;1.9

Joel, 0.00

Jan, &ndash;0.65

Linda, 1.46

(c) Which of these students scored below the mean?

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odgovoreh
Jan and Susan both have negative z scores signifying they scored below the mean.