Essentials of Statistics; MathXL Valuepack Access Card (6-months) (5th Edition)

5th Edition

ISBN: 9780133954982

Author: Mario F. Triola

Publisher: PEARSON

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Addition Rule of Probability

It simply refers to the likelihood of an event taking place whenever the occurrence of an event is uncertain. The probability of a single event can be calculated by dividing the number of successful trials of that event by the total number of trials.

Expected Value

When a large number of trials are performed for any random variable ‘X’, the predicted result is most likely the mean of all the outcomes for the random variable and it is known as expected value also known as expectation. The expected value, also known …

Probability Distributions

Understanding probability is necessary to know the probability distributions. In statistics, probability is how the uncertainty of an event is measured. This event can be anything. The most common examples include tossing a coin, rolling a die, or choosi…

Basic Probability

The simple definition of probability it is a chance of the occurrence of an event. It is defined in numerical form and the probability value is between 0 to 1. The probability value 0 indicates that there is no chance of that event occurring and the prob…

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Textbook Question

Chapter 11, Problem 8CRE

Probability and Honesty Based on the sample described in the preceding exercise, assume that when someone is randomly selected, there is a 0.6 probability that the selected person believes that honesty is always the best policy.

a. If four people are randomly selected, find the probability that they all believe that honesty is always the best policy.
b. If someone is randomly selected, what is the probability that he or she does not believe that honesty is always the best policy?

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Chapter 11, Problem 7CRE

Chapter 11, Problem 1TP

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Chapter 11 Solutions

Essentials of Statistics; MathXL Valuepack Access Card (6-months) (5th Edition)

Ch. 11.2 - Prob. 1BSC Ch. 11.2 - Prob. 2BSC Ch. 11.2 - Prob. 3BSC Ch. 11.2 - Prob. 4BSC Ch. 11.2 - Prob. 5BSC Ch. 11.2 - Prob. 6BSC Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - Prob. 9BSC Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...

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Solution Summary: The author calculates the probability that the selected person believes that honesty is always the best policy if four people are randomly selected.

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