Which statement is false? Explain.
A)If μ = 52 and σ = 15, then X = 81 would be an outlier.
B)If the data are from a normal population, about 68 percent of the values will be within μ ± σ.
C)If μ = 640 and σ = 128, then the coefficient of variation is 20 percent.

Question

Quizplus · Accepted Answer

X = 81 would not be an outlier in this case as it is within three standard deviations from the mean, which is the generally accepted threshold for identifying outliers. The z-score for this value would be (81-52)/15 = 1.93, which is not extreme enough to be considered an outlier.

Therefore, the false statement is A.

Which Statement Is False? Explain