Answered: The amount of time working CHS students…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The amount of time working CHS students work per week is approximately normally distributed with a mean of 18.5 hours and a standard deviation of 4.2 hours.

a) what is the probability that a student works between 10 and 15 hours? Show what the question is asking using a graph of the normal distribution, and then answer it.

B) what is the third quartile point of hours worked? Show what the question is asking by using a graph of the normal distribution, and then answer it. Interpret the meaning of this value.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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