7th Edition

ISBN: 9780100547568

Author: BRASE

Publisher: YUZU

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A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear re…

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Textbook Question

Chapter 7.2, Problem 35P

Basic Computation: Finding Probabilities In Problems 31-50, let z be a random variable with a standard normal distribution. Find the indicated probability, and shade the corresponding area under the standard normal curve.

P ( z ≤ 1.20 )

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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Chapter 7.2, Problem 34P

Chapter 7.2, Problem 36P

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Chapter 7 Solutions

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Basic Computation: Finding Probabilities In Problems 31-50, let z be a random variable with a standard normal distribution . Find the indicated probability , and shade the corresponding area under the standard normal curve. P ( z ≤ 1.20 )

Solution Summary: The author explains how to find the probability P(zle 1.20) and shade the area under the standard normal curve.

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