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Math Statistics Essential Statistics for the Behavioral Sciences

To find − The denominator of t statistic.

To find − The denominator of t statistic.

Solution Summary: The author explains that the denominator of t statistic is the square root of variance divided by sample size, and the degree of freedom is used to check the significance of the results.

Essential Statistics for the Behavioral Sciences

Essential Statistics for the Behavioral Sciences

2nd Edition

ISBN: 9781506386300

Author: Gregory J. Privitera

Publisher: SAGE Publications, Inc

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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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.

Chapter 8, Problem 29PR

a)

To determine

To find − The denominator of t statistic.

b)

To determine

To find − The distribution from which t values are taken.

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Chapter 8, Problem 28PR

Chapter 8, Problem 30PR

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