 4.1CQ: Determine whether each statement is true or false. If the statement...
 4.1CTC: Con Man Game Consider this problem: A con man has 3 coins. One coin...
 4.1DP: Business and FinanceSelect a pizza restaurant and a sandwich shop. ...
 4.1RE: When a standard die is rolled, find the probability of gettinga. A5...
 4.2CQ: Determine whether each statement is true or false. If the statement...
 4.2CTC: de Méré Dice Game Chevalier de Méré won money when he bet unsuspect...
 4.2DP: Sports and Leisure When poker games are shown on television, there ...
 4.2RE: Selecting a Card When a card is selected from a deck, find the prob...
 4.3CQ: Determine whether each statement is true or false. If the statement...
 4.3CTC: Classical Birthday many people do you think need to be in a room so...
 4.3DP: Technology A music player or music organization program can keep tr...
 4.3RE: Software Selection The top10 selling computer software titles last...
 4.4CQ: Determine whether each statement is true or false. If the statement...
 4.4CTC: We know that if the probability of an event happening is 100%, then...
 4.4DP: Health and Wellness Assume that the gender distribution of babies i...
 4.5CQ: Determine whether each statement is true or false. If the statement...
 4.5DP: Politics and Economics Consider the U.S. Senate. Find out about the...
 4.6CQ: Determine whether each statement is true or false. If the statement...
 4.6DP: Your Class Research the famous Monty Hall probability problem. Cond...
 4.6RE: Rolling Two DiceWhen two dice are rolled, find the probability of g...
 4.7CQ: Determine whether each statement is true or false. If the statement...
 4.7RE: Budget Rental Cars Cheap Rentals has nothing but budget cars for re...
 4.8CQ: Determine whether each statement is true or false. If the statement...
 4.8RE: Breakfast Drink In a recent survey.18 people preferred milk. 29 peo...
 4.9CQ: Select the best answer.The probability that an event happens is 0.4...
 4.9RE: Car and Boat Ownership The probability that a person owns a car is ...
 4.10CQ: Select the best answer.When a meteorologist says that there is a 30...
 4.10RE: Car Purchases There is a 0.39 probability that John wall purchase a...
 4.11CQ: Select the best answer.The sample space for tossing 3 coins consist...
 4.11RE: Online Course Selection Roughly 1in 6 students enrolled in higher e...
 4.12CQ: Select the best answer.The complement of guessing 5 correct answers...
 4.12RE: Purchasing Sweaters During a sale at a men’s store. 16 white sweate...
 4.13CQ: Select the best answer.When two dice are rolled, the sample space c...
 4.13RE: Drawing Cards Three cards are drawn from an ordinary deck without r...
 4.14CQ: Select the best answer.What is nP0?a. 0________________b. 1________...
 4.14RE: Coin Toss and Card Drawn A coin is tossed and a card is drawn from ...
 4.15CQ: Select the best answer.What is the number of permutations of 6 diff...
 4.15RE: Movie Releases The top five countries for movie releases so far thi...
 4.16CQ: Select the best answer.What is 0!?a. 0________________b. 1_________...
 4.16RE: Factory Output A manufacturing company has three factories: X, Y, a...
 4.17CQ: Select the best answer.What is nCn?a. 0________________b. 1________...
 4.17RE: Effectiveness of Vaccine A vaccine has a 90% probability of being e...
 4.18CQ: Complete the following statements with the best answer.The set of a...
 4.19CQ: Complete the following statements with the best answer.The probabil...
 4.19RE: Car Purchase The probability that Sue will live on campus and buy a...
 4.20CQ: Complete the following statements with the best answer.If an event ...
 4.20RE: Applying Shipping Labels Four unmarked packages have lost their shi...
 4.21CQ: Complete the following statements with the best answer.The sum of t...
 4.21RE: Health Club Membership Of the members of the Blue River Health Club...
 4.22CQ: Complete the following statements with the best answer.When two eve...
 4.22RE: Bad Weather The probability that it snows and the bus arrives late ...
 4.23CQ: When a card is drawn, find the probability of gettinga. A jack_____...
 4.23RE: Education Level and Smoking At a large factory, the employees were ...
 4.24CQ: Selecting a Card When a card is drawn from a deck, find the probabi...
 4.24RE: War Veterans Approximately 11% of the civilian population are veter...
 4.25CQ: Selecting a Sweater At a men’s clothing store, 12 men purchased blu...
 4.25RE: DVD Players Eightyone percent of U.S. households have DVD players....
 4.26CQ: Rolling Dice When 2 dice are rolled, find the probability of gening...
 4.26RE: Chronic Sinusitis The U.S. Department of Health and Human Services ...
 4.27CQ: Appliance Ownership The probability that a person owns a microwave ...
 4.27RE: Automobile License Plate An automobile license plate consists of 3 ...
 4.28CQ: Starting Salaries Of the physics graduates of a university, 30% rec...
 4.28RE: Types of Copy Paper White copy paper is offered in 5 different stre...
 4.29CQ: Selecting Cards Five cards are drawn from an ordinary deck without ...
 4.29RE: Baseball Players How many ways can 3 outfielders and 4 infielders b...
 4.30CQ: Scholarships The probability that Samantha will be accepted by the ...
 4.31CQ: New Car Warranty The probability that a customer will buy a car and...
 4.32CQ: Bowling and Club Membership Of the members of the Spring Lake Bowli...
 4.32RE: Committee Representation There are 6 Republican, 5 Democrat, and 4 ...
 4.33CQ: Work and Weather The probability that Mike has to work overtime and...
 4.33RE: Song Selections A promotional MP3 player is available with the capa...
 4.34CQ: Education of Factory Employees At a large factory, the employees we...
 4.34RE: Employee Health Care Plans A new employee has a choice of 5 health ...
 4.35CQ: Heart Attacks In a certain highrisk group, the chances of a person...
 4.35RE: Course Enrollment There are 12 students who wish to enroll in a par...
 4.36CQ: Rolling a Die A single die is rolled 4 times. Find the probability ...
 4.36RE: Candy Selection A candy store allows customers to select 3 differen...
 4.37CQ: Eye ColorIf 85% of all people have brown eyes and 6 people are sele...
 4.38CQ: Singer Selection How many ways can 5 sopranos and 4 altos be select...
 4.39CQ: Speaker Selection How many different ways can 8 speakers be seated ...
 4.39RE: Book Selection If a student can select 5 novels from a reading list...
 4.40CQ: Stocking Machines A soda machine servicer must restock and collect ...
 4.40RE: Leisure Activities A newspaper advertises 5 different movies, 3 pla...
 4.41CQ: ID Cards One company’s ID cards consist of 5 letters followed by 2 ...
 4.41RE: License Plates License plates are to be issued with 3 letters follo...
 4.42CQ: How many different arrangements of the letters in the word number c...
 4.43CQ: Physics Test A physics test consists of 25 true/false questions. Ho...
 4.43RE: Territorial Selection Several territories and colonies today are st...
 4.44CQ: Cellular Telephones How many different ways can 5 cellular telephon...
 4.44RE: Yahtzee Yahtzee is a game played with 5 dice. Players attempt to sc...
 4.45CQ: Fruit Selection On a lunch counter, there are 3 oranges. 5 apples, ...
 4.45RE: Personnel Classification For a survey, a subject can be classified ...
 4.46CQ: Cruise Ship Activities A cruise director schedules 4 different movi...
 4.47CQ: Committee Selection At a sorority meeting, there are 6 seniors. 4 j...
 4.48CQ: Banquet Meal Choices For a banquet, a committee can select beef, po...
Solutions for Chapter 4: Elementary Statistics: A Step By Step Approach 9th Edition
Full solutions for Elementary Statistics: A Step By Step Approach  9th Edition
ISBN: 9780073534985
Solutions for Chapter 4
Get Full SolutionsElementary Statistics: A Step By Step Approach was written by and is associated to the ISBN: 9780073534985. This expansive textbook survival guide covers the following chapters and their solutions. Since 95 problems in chapter 4 have been answered, more than 192709 students have viewed full stepbystep solutions from this chapter. Chapter 4 includes 95 full stepbystep solutions. This textbook survival guide was created for the textbook: Elementary Statistics: A Step By Step Approach , edition: 9.

Addition rule
A formula used to determine the probability of the union of two (or more) events from the probabilities of the events and their intersection(s).

All possible (subsets) regressions
A method of variable selection in regression that examines all possible subsets of the candidate regressor variables. Eficient computer algorithms have been developed for implementing all possible regressions

Alternative hypothesis
In statistical hypothesis testing, this is a hypothesis other than the one that is being tested. The alternative hypothesis contains feasible conditions, whereas the null hypothesis speciies conditions that are under test

Attribute
A qualitative characteristic of an item or unit, usually arising in quality control. For example, classifying production units as defective or nondefective results in attributes data.

Bernoulli trials
Sequences of independent trials with only two outcomes, generally called “success” and “failure,” in which the probability of success remains constant.

Box plot (or box and whisker plot)
A graphical display of data in which the box contains the middle 50% of the data (the interquartile range) with the median dividing it, and the whiskers extend to the smallest and largest values (or some deined lower and upper limits).

Categorical data
Data consisting of counts or observations that can be classiied into categories. The categories may be descriptive.

Central limit theorem
The simplest form of the central limit theorem states that the sum of n independently distributed random variables will tend to be normally distributed as n becomes large. It is a necessary and suficient condition that none of the variances of the individual random variables are large in comparison to their sum. There are more general forms of the central theorem that allow ininite variances and correlated random variables, and there is a multivariate version of the theorem.

Conditional probability mass function
The probability mass function of the conditional probability distribution of a discrete random variable.

Continuous distribution
A probability distribution for a continuous random variable.

Correlation matrix
A square matrix that contains the correlations among a set of random variables, say, XX X 1 2 k , ,…, . The main diagonal elements of the matrix are unity and the offdiagonal elements rij are the correlations between Xi and Xj .

Cumulative distribution function
For a random variable X, the function of X deined as PX x ( ) ? that is used to specify the probability distribution.

Distribution function
Another name for a cumulative distribution function.

Error mean square
The error sum of squares divided by its number of degrees of freedom.

Error propagation
An analysis of how the variance of the random variable that represents that output of a system depends on the variances of the inputs. A formula exists when the output is a linear function of the inputs and the formula is simpliied if the inputs are assumed to be independent.

Exhaustive
A property of a collection of events that indicates that their union equals the sample space.

F distribution.
The distribution of the random variable deined as the ratio of two independent chisquare random variables, each divided by its number of degrees of freedom.

Frequency distribution
An arrangement of the frequencies of observations in a sample or population according to the values that the observations take on

Gaussian distribution
Another name for the normal distribution, based on the strong connection of Karl F. Gauss to the normal distribution; often used in physics and electrical engineering applications

Generating function
A function that is used to determine properties of the probability distribution of a random variable. See Momentgenerating function