6th Edition

ISBN: 9781259957598

Author: DOANE

Publisher: RENT MCG

Concept explainers

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 5, Problem 99CE

Dolon Web Security Consultants requires all job applicants to submit to a test for illegal drugs. If the applicant has used illegal drugs, the test has a 90 percent chance of a positive result. If the applicant has not used illegal drugs, the test has an 85 percent chance of a negative result. Actually, 4 percent of the job applicants have used illegal drugs. If an applicant has a positive test, what is the probability that he or she has actually used illegal drugs? Hint: Make a 2 × 2 contingency table of frequencies, assuming 500 job applicants.

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Chapter 5 Solutions

APPLIED STAT.IN BUS.+ECONOMICS

Ch. 5.1 - A credit card customer at Barnes and Noble can use...Ch. 5.1 - A survey asked tax accounting firms their business...Ch. 5.1 - A baseball player bats either left-handed (L) or...Ch. 5.1 - A die is thrown (1, 2, 3, 4, 5, 6) and a coin is...Ch. 5.2 - Prob. 5SE Ch. 5.2 - Prob. 6SE Ch. 5.2 - Prob. 7SE Ch. 5.2 - Prob. 8SE Ch. 5.2 - Prob. 9SE Ch. 5.2 - Prob. 10SE

Ch. 5.2 - Prob. 11SE Ch. 5.2 - Prob. 12SE Ch. 5.3 - Prob. 13SE Ch. 5.3 - Are these events collectively exhaustive or not?...Ch. 5.3 - Prob. 15SE Ch. 5.3 - Given P(A) = .70, P(B) = .30, and P(A B) = .00,...Ch. 5.3 - Currently Samsung ships 21.7 percent of the...Ch. 5.3 - The probability of an IRS audit is 1.7 percent for...Ch. 5.3 - Prob. 19SE Ch. 5.3 - Prob. 20SE Ch. 5.3 - Prob. 21SE Ch. 5.3 - Prob. 22SE Ch. 5.4 - Given P(J) = .26, P(K) = .48. If A and B are...Ch. 5.4 - Given P(A) = .40, P(B) = .50. If A and B are...Ch. 5.4 - Prob. 25SE Ch. 5.4 - Prob. 26SE Ch. 5.4 - Prob. 27SE Ch. 5.4 - Prob. 28SE Ch. 5.4 - The probability that a student has a Visa card...Ch. 5.4 - Bob sets two alarm clocks (battery-powered) to be...Ch. 5.4 - A hospitals backup power system has three...Ch. 5.4 - Over 1,000 people try to climb Mt. Everest every...Ch. 5.4 - Suppose 50 percent of the customers at Pizza...Ch. 5.5 - The contingency table below shows the results of a...Ch. 5.5 - The contingency table below summarizes a survey of...Ch. 5.5 - Prob. 36SE Ch. 5.5 - A survey of 156 introductory statistics students...Ch. 5.5 - This contingency table describes 200 business...Ch. 5.5 - Based on the previous problem, is major...Ch. 5.5 - The following contingency table shows average...Ch. 5.6 - Of grocery shoppers who have a shopping cart, 70...Ch. 5.6 - A study showed that 60 percent of The Wall Street...Ch. 5.7 - A drug test for athletes has a 5 percent false...Ch. 5.7 - Half of a set of the parts are manufactured by...Ch. 5.7 - An airport gamma ray luggage scanner coupled with...Ch. 5.8 - (a) Find 8! without a calculator. Show your work....Ch. 5.8 - Prob. 47SE Ch. 5.8 - In the Minnesota Northstar Cash Drawing, you pick...Ch. 5.8 - Prob. 49SE Ch. 5.8 - Prob. 50SE Ch. 5.8 - Until 2005, the UPC bar code had 12 digits (09)....Ch. 5.8 - Bob has to study for four final exams: accounting...Ch. 5.8 - Prob. 53SE Ch. 5.8 - Prob. 54SE Ch. 5.8 - Prob. 55SE Ch. 5.8 - Prob. 56SE Ch. 5 - Prob. 1CR Ch. 5 - Prob. 2CR Ch. 5 - Prob. 3CR Ch. 5 - Prob. 4CR Ch. 5 - Prob. 5CR Ch. 5 - Prob. 6CR Ch. 5 - Prob. 7CR Ch. 5 - In a contingency table, explain the concepts of...Ch. 5 - Prob. 9CR Ch. 5 - Prob. 10CR Ch. 5 - Prob. 11CR Ch. 5 - MMs are blended in a ratio of 13 percent brown. 14...Ch. 5 - Prob. 61CE Ch. 5 - A judge concludes that there is a 20 percent...Ch. 5 - Prob. 63CE Ch. 5 - Prob. 64CE Ch. 5 - In the first year after its release, 83 percent of...Ch. 5 - The reported U.S. cesarean section delivery rate...Ch. 5 - Prob. 67CE Ch. 5 - If Punxsutawney Phil sees his shadow on February...Ch. 5 - Prob. 69CE Ch. 5 - Bob owns two stocks. There is an 80 percent...Ch. 5 - Prob. 71CE Ch. 5 - A study showed that trained police officers can...Ch. 5 - The probability that a 2011 Audi A8 will be stolen...Ch. 5 - The probability of being struck by lightning is...Ch. 5 - Prior to the start of the 2016 NCAA Mens...Ch. 5 - A certain model of remote-control Stanley garage...Ch. 5 - (a) In a certain state, license plates consist of...Ch. 5 - Prob. 78CE Ch. 5 - Prob. 79CE Ch. 5 - The probability that a customer at a grocery store...Ch. 5 - The probability that an international flight...Ch. 5 - A certain airplane has two independent alternators...Ch. 5 - Prob. 83CE Ch. 5 - Prob. 84CE Ch. 5 - A turboprop aircraft has two attitude gyroscopes,...Ch. 5 - Which are likely to be independent events? For...Ch. 5 - In child-custody cases, about 70 percent of the...Ch. 5 - A web server hosting company advertises 99.999...Ch. 5 - Prob. 89CE Ch. 5 - The probability is 1 in 4,000,000 that a single...Ch. 5 - If there are two riders on a city bus, what is the...Ch. 5 - Prob. 92CE Ch. 5 - Four students divided the task of surveying the...Ch. 5 - Refer to the contingency table shown below. (a)...Ch. 5 - Prob. 95CE Ch. 5 - High levels of cockpit noise in an aircraft can...Ch. 5 - Prob. 97CE Ch. 5 - A biometric security device using fingerprints...Ch. 5 - Dolon Web Security Consultants requires all job...

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Solution Summary: The author calculates the probability that an applicant has actually used illegal drugs if he/she has a positive test.

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Chapter 5 Solutions