Irena surveyed 100 people. She asked each person two questions:• Do you speak a second language?• Do you play a musical instrument?The results are summarized in the two-way table below.Speaks a SecondLanguage?Yes NoYes 13 19No 27 41Irena believes that musicians are more likely to speak a second language than people who are not musicians. Does the data in the table support Irena's belief? Choose the BEST answer.Plays aMusicalInstrument?Yes, because there are only 19 musicians who do not speak a second language.0.Yes, because over two-thirds of the people who speak a second language do not play a musical instrument.Oc No, because approximately the same percentage of the musicians and non-musicians speak a second language.No, because only 40 of the 100 people surveyed speak a second language.

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Answered: Do you speak a second language? Do you…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow. Hours of Sleep Fewer than 6 6 to 6.9 7 to 7.9 8 or more Age Group 39 or younger 40 or older Need Help? 38 62 Read It 77 (a) Conduct a test of independence to determine whether hours of sleep are independent of age. State the null and alternative hypotheses. O Ho: Hours of sleep per night is not independent of age. H₂: Hours of sleep per night is independent of age. a 63 OHO: Hours of sleep per night is mutually exclusive from age. H₂: Hours of sleep per night is not mutually exclusive from age. % O Ho: Hours of sleep per night is independent of age. H₂: Hours of…
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6
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February 12, 2009 marked the 200th anniversary of Charles Darwin's birth. To celebrate, Gallup, anational polling organization, surveyed 1,018 Americans about their education level and their beliefsabout the theory of evolution. The survey results are displayed in the provided two-way table. High School Some College College graduate Postgraduate TotalBelieve 80 133 121 63 397Do Not Believe 103 94 48 9 254No Opinion 197 98 59 13 367Total 380 325 228 85 1,018a. What proportion of respondents have a college degree? Round your answer to three decimal…

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