The height of 12-year-old children is considered to be continuous random variable which obeys a normal law of average 125 cm and standard deviation 15 cm. If we choose a child of 12 years old at random, what is the probability that he will have a height over 140 cm?
The height of 12-year-old children is considered to be continuous random variable which obeys a normal law of average 125 cm and standard deviation 15 cm. If we choose a child of 12 years old at random, what is the probability that he will have a height over 140 cm?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Question
The height of 12-year-old children is considered to be
continuous random variable which obeys a normal law of
average 125 cm and standard deviation 15 cm. If we choose a child
of 12 years old at random, what is the
height over 140 cm?
Expert Solution
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Step 1: Given data :
Mean()=125
Standard deviation()=15
Step by step
Solved in 3 steps with 4 images
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