The table below displays the results of a study investigating the effectiveness of bicycle safety helmets inpreventing head injury. The data consist of a random sample of 793 bicyclists who were involved inbicycle accidents.Head InjuryWearing HelmetYesNoTotalYes17218235No130428558Total147646793Is receiving a head injury independent of wearing a helmet?No - they are dependent because the conditional probability equals the unconditional probability.No - they are dependent because the probability of a head injury given wearing a helmet is notequal to the probability of a head injury.Yes - they are independent because the probability of a head injury given wearing a helmet is notequal to the probability of a head injury.Yes - they are independent because the conditional probability equals the unconditionalprobability.aror

Two events A and B are said to be independent if P(A | B) = P(A).

Answered: The tajble below displays the results…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a recent survey, 70% of management executives thought that it should be mandatory for business students to take a course in Quantitative methods. Fora random sample of 5 human resource directors, what is the probability that at least two of them think that it should not be mandatory for business students to take a quantitative methods course?
80% of U.S. drivers over the age of 30 have had a speeding ticket and 55% of those have also been in an accident while behind the wheel. What is the probability that a randomly selected US driver over the age of 30 has had a speeding ticket and also been in an accident while behind the wheel?
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The center for the study of american electorate indicated that 64% of the voting- age voters cast ballots in the 2008 presidential election. It also indicated in the west, 34.6% of voting-age voters voted for a democrat as a representative, an increase from 30.8% in 2004 A start up company in San Jose, California has 10 employees Question: Eight of the employees votes for a Democratic Representative. determine the probability that at least 8 of the employees would vote for the democratic if they followed the national trend. (Hint: find P(X> or equal 8) using as probability of success the probability that represent the voters cast ballots) (4 decimals) Answer: The probability that at least 8 employees would vote for the democratic if they followed the national trend is :

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