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Name: Let’s suppose the normally distributed population of adults in Indiana
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Description: Let’s suppose the normally distributed population of adults in Indiana has a mean daily sodium intake of 2,500 milligrams. In Indiana, a random sample of 40 adults is selected from fast food restaurants. Based on the results of a nutrition survey giv

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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Let’s suppose the normally distributed population of adults in Indiana has a mean daily sodium intake of 2,500 milligrams. In Indiana, a random sample of 40 adults is selected from fast food restaurants. Based on the results of a nutrition survey given to the sample participants, the mean daily sodium intake of the sample is 2,950 milligrams with a standard deviation of 850 milligrams. Using the significance level α = .05, test the claim that the mean sodium intake of the sample of adults surveyed at fast food restaurants is significantly greater than the sodium intake of the population of adults in Indiana

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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