APFIVE Z-Score in a Normal Distribution
A researcher finds that the weights of adult male gorillas are normally distributed with mean μ = 180 kg and standard deviation σ = 21 kg. If a male gorilla weighs 201 kg, which of the following best describes its position in the distribution?
A
It is 2 standard deviations above the mean
B
It is 1 standard deviation below the mean
C
It is 1 standard deviation above the mean
D
It is at the 84th percentile of the distribution