Intro Stats, Books a la Carte Edition (5th Edition)

5th Edition

ISBN: 9780134210285

Author: Richard D. De Veaux, Paul Velleman, David E. Bock

Publisher: PEARSON

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Concept explainers

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 12, Problem 60E

Immigration The table shows the political affiliations of U.S. voters and their positions on supporting stronger immigration enforcement.

Chapter 12, Problem 60E, Immigration The table shows the political affiliations of U.S. voters and their positions on

a) What’s the probability that
1. i) a randomly chosen voter favors stronger immigration enforcement?
2. ii) a Republican favors stronger enforcement?
3. iii) a voter who favors stronger enforcement is a Democrat?
b) A candidate thinks she has a good chance of gaining the votes of anyone who is a Republican or in favor of stronger enforcement of immigration policy. What proportion of voters is that?

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Chapter 12, Problem 59E

Chapter 12, Problem 61E

Chapter 12 Solutions

Intro Stats, Books a la Carte Edition (5th Edition)

Ch. 12.1 - One common proposal for beating the lottery is to...Ch. 12.3 - We sampled some pages of this book at random to...Ch. 12.3 - Prob. 3JC Ch. 12.5 - Prob. 4JC Ch. 12.6 - Prob. 5JC Ch. 12 - Flipping a coin Flipping a fair coin is said to...Ch. 12 - Dice Rolling a fair six-sided die is supposed to...Ch. 12 - Flipping a coin II Your friend says: I flipped...Ch. 12 - Dice II After rolling doubles on a pair of dice...Ch. 12 - Wardrobe In your dresser are five blue shirts,...

Ch. 12 - Prob. 6E Ch. 12 - Cell phones and surveys A 2015 study conducted by...Ch. 12 - Cell phones and surveys II The survey by the...Ch. 12 - Pet ownership Suppose that 25% of people have a...Ch. 12 - Cooking and shopping Forty-five percent of...Ch. 12 - Sports What is the probability that a person likes...Ch. 12 - Sports again From Exercise 11, if someone doesnt...Ch. 12 - Late to the train A student figures that he has a...Ch. 12 - Field goals A nervous kicker usually makes 70% of...Ch. 12 - Titanic On the Titanic, the probability of...Ch. 12 - Prob. 16E Ch. 12 - Facebook Facebook reports that 70% of its users...Ch. 12 - Prob. 18E Ch. 12 - Prob. 19E Ch. 12 - Prob. 20E Ch. 12 - Prob. 21E Ch. 12 - Online banking last time Given the probabilities...Ch. 12 - Sample spaces For each of the following, list the...Ch. 12 - Sample spaces II For each of the following, list...Ch. 12 - Prob. 25E Ch. 12 - Rain The weather reporter on TV makes predictions...Ch. 12 - Winter Comment on the following quotation: What I...Ch. 12 - Snow After an unusually dry autumn, a radio...Ch. 12 - Auto insurance Insurance companies collect annual...Ch. 12 - Prob. 30E Ch. 12 - Prob. 31E Ch. 12 - Prob. 32E Ch. 12 - Electronics Suppose that 46% of families living in...Ch. 12 - Homes Funding for many schools comes from taxes...Ch. 12 - Prob. 35E Ch. 12 - Lefties Although its hard to be definitive in...Ch. 12 - Prob. 37E Ch. 12 - Prob. 38E Ch. 12 - Car repairs A consumer organization estimates that...Ch. 12 - Stats projects In a large Introductory statistics...Ch. 12 - More repairs Consider again the auto repair rates...Ch. 12 - Another project You are assigned to be part of a...Ch. 12 - Prob. 43E Ch. 12 - Final project You used the Multiplication Rule to...Ch. 12 - Prob. 45E Ch. 12 - Polling, part II According to Pew Research, the...Ch. 12 - Prob. 47E Ch. 12 - Blood The American Red Cross says that about 45%...Ch. 12 - Prob. 49E Ch. 12 - Disjoint or independent? In Exercise 48, you...Ch. 12 - Prob. 51E Ch. 12 - The train To get to work, a commuter must cross...Ch. 12 - Prob. 53E Ch. 12 - Pepsi For a sales promotion, the manufacturer...Ch. 12 - 9/11? On September 11, 2002, the first anniversary...Ch. 12 - Prob. 56E Ch. 12 - Prob. 57E Ch. 12 - Prob. 58E Ch. 12 - Health The probabilities that an adult American...Ch. 12 - Immigration The table shows the political...Ch. 12 - Prob. 61E Ch. 12 - Birth order, take 2 Look again at the data about...Ch. 12 - Batteries A junk box in your room contains a dozen...Ch. 12 - Prob. 64E Ch. 12 - Eligibility A university requires its biology...Ch. 12 - Benefits Fifty-six percent of all American workers...Ch. 12 - Unsafe food Early in 2010, Consumer Reports...Ch. 12 - Prob. 68E Ch. 12 - Prob. 69E Ch. 12 - Politics Given the table of probabilities from...Ch. 12 - Gender A poll conducted by Gallup classified...Ch. 12 - Cars A random survey of autos parked in student...Ch. 12 - Prob. 73E Ch. 12 - Prob. 74E Ch. 12 - Late luggage Remember Leah (Exercise 73)? Suppose...Ch. 12 - Prob. 76E Ch. 12 - Prob. 77E Ch. 12 - Prob. 78E Ch. 12 - Prob. 79E Ch. 12 - Prob. 80E Ch. 12 - Drunks Police often set up sobriety...Ch. 12 - No-shows An airline offers discounted...Ch. 12 - Prob. 83E Ch. 12 - Parts A company manufacturing electronic...Ch. 12 - HIV testing In July 2005, the journal Annals of...Ch. 12 - Polygraphs Lie detectors are controversial...

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Solution Summary: The author calculates the probability that a randomly chosen voter favors stronger immigration enforcement.

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Chapter 12 Solutions