Answered: For each of the following, Circle to…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 22PFA

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Question

For each of the following, Circle to indicate whether it is True or False. .

True False The standard normal distribution is a normal distribution in which both the mean and standard deviation have a value of 0.

True False If either form of test is valid, using a non-parametric test usually gives you more statistical power than analyzing the data with a parametric test.

True False The central limit theorem states that the sum (or mean) of a large number of variables will follow a normal distribution.

True False When the t-statistic that you calculate from your data is negative and the absolute value is larger than the critical value, then you will reject the null hypothesis.

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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