6th Edition

ISBN: 9780134685779

Author: Mario F. Triola

Publisher: PEARSON

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Textbook Question

Chapter 8, Problem 1RE

True/False Characterize each of the following statements as being true or false.

a. In a hypothesis test, a very high p-value indicates strong support of the alternative hypothesis.

b. The Student t distribution can he used to test a claim about a population mean whenever the sample data are randomly selected from a normally distributed population.

c. When using a χ² distribution to test a claim about a population standard deviation, there is a very loose requirement that the sample data are from a population having a normal distribution.

d. When conducting a hypothesis test about the claimed proportion of adults who have current passports, the problems with a convenience sample can be overcome by using a larger sample size.

e. When repeating the same hypothesis test with different random samples of the same size, the conclusions will all be the same.

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, Problem 10CQQ

Chapter 8, Problem 2RE

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Chapter 8 Solutions

Essentials of Statistics (6th Edition)

Ch. 8.1 - Vitamin C and Aspirin A bottle contains a label...Ch. 8.1 - Estimates and Hypothesis Tests Data Set 3 Body...Ch. 8.1 - Mean Height of Men A formal hypothesis test is to...Ch. 8.1 - Interpreting P-value The Ericsson method is one of...Ch. 8.1 - Identifying H0 and H1. In Exercises 58, do the...Ch. 8.1 - Identifying H0 and H1. In Exercises 58, do the...Ch. 8.1 - Identifying H0 and H1. In Exercises 58, do the...Ch. 8.1 - Identifying H0 and H1. In Exercises 58, do the...Ch. 8.1 - Conclusions. In Exercises 912, refer to the...Ch. 8.1 - Conclusions. In Exercises 912, refer to the...

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Solution Summary: The author explains the P-value method, which is a symmetric distribution that follows normal distribution with unknown population standard deviation.

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Chapter 8 Solutions