Answered: The Alpha company takes a survey of the…

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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Hint: When these problems ask for the chances of something happening, it is referring to the percentage for your answer (the probability). Make sure to use the percentage form without a % symbol for each answer!

1. The Alpha company takes a survey of the age for all employees. The average age is 35 with a standard deviation of 3.2 years. The results form a normal distribution curve. If the company has 985 workers, how many are over 44 years old? (Round your answer to the nearest whole person)

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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