Answered: Suppose that we want to determine if…

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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Question

Suppose that we want to determine if the average amount of time
spent online by the students is less
than 4.5 hours/day. To this end, we
conduct a survey of students and ask
them how long they spend online per
day. We obtain the following results:
4.1, 4.3, 4.3, 4.5, 4.6, 4.3, 4.1, 4.6,
4.7, 4.6, 4.7, 4.1, 4.3, 4.3, 4.5, 4.6,
4.3, 4.1, 4.6, 4.7, 4.6, 4.7, 4.5, 4.6,
4.3, 4.1 Assume that the number of
hours spent online has a normal distribution. Test your hypot

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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