(EOC Q10) answer letters A-C please

10. Gravetter/Wallnau/Forzano, Essentials - Chapter 15 - End-of-chapter question 19 Research indicates that people who volunteer to participate in research studies tend to have higher intelligence than nonvolunteers. To test this phenomenon, a researcher obtains a sample of 200 high school students. The students are given a description of a psychological research study and asked whether they would volunteer to participate. The researcher also obtains an IQ score for each student and classifies the students into high-, medium-, and low-IQ groups. Do the following data indicate a significant relationship between 1Q and volunteering? Test at the .05 level of significance. IQ High Medium Low Volunteer 43 73 34 150 Nonvolunteer 7 27 16 50 50 100 50 Chi-Severe Distribution Degrees of Freedom . 18 O 0123 4 5 6 7 8 9 10 1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 26 09 30 x2-critical Conclusion: O Fail to reject the null hypothesis; there is no significant relationship between 1Q and volunteering. O Reject the null hypothesis; there is a significant relationship between 1Q and volunteering. O Fail to reject the null hypothesis; there is a significant relationship between 1Q and volunteering. O Reject the null hypothesis; there is no significant relationship between IQ and volunteering