The Denver Post reported that a recent Audit of Los Angeles 911 calls showed that 85% were not emergencies. Suppose the911 operators in Los Angeles have just received five calls.LAUSE SALT(a) What is the probability that all five calls are, in fact, emergencies? (Round your answer to five decimal places.)(b) What is the probability that four or more calls are not emergencies? (Round your answer to five decimal places.)(c) What is the smallest number of calls that the 911 operators need to answer to be at least 89% (or more) surethat at least one call is, in fact, an emergency? (Enter your answer as a whole number.)calls

Given that,n = 5Probability of not emergencies(p) = 85%= 0.85So,probability of emergencies(p) = 1-…

Answered: The Denver Post reported that a recent…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A newspaper company classifies its customers by gender and location of residence. The research department has gathered data from a random sample of 1928 customers. The data is summarized in the table below. Gender and Residence of Customers Residence Males Females Apartment 288 84 Dorm 300 221 With Parent(s) 104 71 Sorority/Fraternity House 237 194 Other 164 265 What is the probability that a customer is female? Express your answer as a fraction or a decimal number rounded to four decimal places.
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Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 5 Pennies 26 Dimes 18 Nickels 10 Quarters What is the probability that you reach into the jar and randomly grab a nickel and then, without replacement, another nickel? Express your answer as a fraction or a decimal number rounded to four decimal places.
Where does all that Halloween candy go? The October 2004 issue of Readers' Digest quoted that "88% of parents admit taking Halloween candy from their children's trick-or-treat bags." The source of information was the National Confectioners Association. Suppose that 25 parents are interviewed. What is the probability that 20 or more took Halloween candy from their children's trick-or-treat bags? (Give your answer correct to three decimal places.)
is the following is an example of an empirical probability or a theoretical probability? Joe tosses a coin 10 times and gets 4 heads. He concludes that the probability of getting a head is 4/10=0.4 or 40%. A. Empirical B. Theoretical
Suppose the probability of an IRS audit is 1.2 percent for U.S. taxpayers who file form 1040 and who earned $100,000 or more. (a) What are the odds that such a taxpayer will be audited? (Round your answers to the nearest whole number.) Odds that a taxpayer will be audited to (b) What are the odds against such a taxpayer being audited? (Round your answers to the nearest whole number.) Odds against a yaxpayer being audited to
es The Internal Revenue Service is studying the category of charitable contributions. A sample of 25 returns is selected from young couples between the ages of 20 and 35 who had an adjusted gross income of more than $100,000. Of these 25 returns, five had charitable contributions of more than $1,000. Four of these returns are selected for a comprehensive audit. a. The hypergeometric distribution is appropriate because it is Osampling a small population without replacement. O sampling a small population with replacement. O sampling a large population without replacement. b. What is the probability exactly one of the four audited had a charitable deduction of more than $1,000? (Round your answer to 4 decimal places.) Probability
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Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 18 Pennies 14 Dimes 18 Nickels 9 Quarters What is the probability that you reach into the jar and randomly grab a quarter and then, without replacement, a penny? Express your answer as a fraction or a decimal number rounded to four decimal places.

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