Answered: A national publication reported that a…

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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A national publication reported that a college student living away from home spends, on
average, no more than $15 per month on laundry. You believe this figure is too low and
want to disprove this claim. To conduct the test, you randomly select 17 college students
and ask them to keep track of the amount of money they spend during a given month for
laundry. The sample produces an average expenditure on laundry of $19.34, with a
population standard deviation of $4.52. Use these sample data to conduct the
hypothesis test. Assume you are willing to take a 10% risk of making a Type I error and
that spending on laundry per month is normally distributed in the population

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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