The heights of a certain type of tree are approximately normally distributed with a mean height = 5 ft and a standard deviation = 0.4 ft. Which statement must be true?
Answer
A
A tree with a height of 5.4 ft is 1 standard deviation below the mean.
B
A tree with a height of 4.6 ft is 1 standard deviation above the mean.
C
A tree with a height of 5.8 ft is 2.5 standard deviations above the mean.
D
A tree with a height of 6.2 ft is 3 standard deviations above the mean.