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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

Given two dependent random samples with the following results:

Population 1	46	37	39	26	31	27	22
Population 2	42	44	37	22	45	25	31

Use this data to find the 95%95% confidence interval for the true difference between the population means. Assume that both populations are normally distributed.

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Calculate the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.

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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