Answered: Which situtaion below violates an…

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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Which situtaion below violates an assumption for conducting hypothesis tests using the t statistic?

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Two observations in a sample are independent from one another.

The population from which a small sample (n < 30) is obtained for a hypothesis test is normally distributed.

The population from which a large sample (n > 30) is obtained for a hypothesis test is not normally distributed.

None of these situations violates an assumption for conducting hypothesis tests using the t statistic.

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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