Understandable Statistics: Concepts and Methods

12th Edition

ISBN: 9781337119917

Author: Charles Henry Brase, Corrinne Pellillo Brase

Publisher: Cengage Learning

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Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could co…

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a…

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Textbook Question

Chapter 8.3, Problem 1P

Statistical Literacy To use the normal distribution to test a proportion p, the conditions np > 5 and nq > 5 must be satisfied. Does the value of p come from H₀, or is it estimated by using p ^ from the sample?

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 8.2, Problem 30P

Chapter 8.3, Problem 2P

Chapter 8 Solutions

Understandable Statistics: Concepts and Methods

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Statistical Literacy To use the normal distribution to test a proportion p , the conditions np &gt; 5 and nq &gt; 5 must be satisfied. Does the value of p come from H 0 , or is it estimated by using p ^ from the sample?

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Chapter 8 Solutions

Statistical Literacy To use the normal distribution to test a proportion p , the conditions np > 5 and nq > 5 must be satisfied. Does the value of p come from H 0 , or is it estimated by using p ^ from the sample?