Answered: The following statements are either…

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

The following statements are either true or false. Indicate true or false and justify your answer briefly.

1.) One can reduce the width of a confidence interval by taking a smaller sample size.

2.) We cannot interpret the confidence interval estimate of _µ as a probability statement about _µ because the population mean is a fixed quantity.

3.) In confidence interval estimation of the population mean when the population standard deviation is unknown and the sample size is large we may use the standard normal distribution table.

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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