Answered: An employment information service…

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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An employment information service claims the mean annual pay for full-time male workers over age 25 without a high school diploma is

$22,250.The annual pay for a random sample of 10 full-time male workers over age 25 without a high school diploma is listed. At α=0.05,test the claim that the mean salary is

$22,250.

Assume the population is normally distributed.

20,653

21,140

22,351

21,396

22,977

16,920

19,156

23,196

24,187

26,284

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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