Answered: a new low fat fudge bar is advertised…

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

a new low fat fudge bar is advertised as having 120 calories. the manufacturing company conducts regular checks by selecting independent random samples and testing the sample average against the advertised average. Historically the population varies as a normal distribution and the most recent sample consists of the numbers 99, 132, 125, 92, 108, 127, 105, 112, 102, 112, 129, 112, 111, 102, 122. Is the population value significantly different from 120 calories (significance level 5%)?

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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