SOLUTION: The heights of a certain species of plant are normally distributed, with mean 22 cm and standard deviation 3 cm. What is the probability that a plant chosen at random will be betwe

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Question 314085: The heights of a certain species of plant are normally distributed, with mean 22 cm and standard deviation 3 cm. What is the probability that a plant chosen at random will be between 19.75 and 24.25 cm tall?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the z-scores for 19.75 and 24.25.
z%281%29=%2819.75-22%29%2F3=-0.75
z%282%29=%2824.25-22%29%2F3=0.75
P%281%29=0.2266
P%282%29=0.7734
P(19.75 < h < 24.25) = +P%282%29-P%281%29=0.5467