A music teacher had noticed that some students went to pieces during exams. He wanted to...
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A music teacher had noticed that some students went to pieces during exams. He wanted to test whether this performance anxiety was different for people playing different instruments. He took groups of guitarists, drummers and pianists (variable = 'Instru') and measured their anxiety (variable = 'Anxiety') during the exam. He also noted the type of exam they were performing (in the UK, musical instrument exams are known as 'grades' and range from 1 to 8). He wanted to see whether the type of instrument played affected performance anxiety when accounting for the grade of the exam. Which of the following statements best reflects what the effect of 'Instru' in the output table below tells us? Dependent Variable: ANXIETY Type III Sum of Squares 8151.482 32903.788 907.833 6351.708 9325.228 Source Corrected Model Intercept GRADE INSTRU Tests of Between-Subjects Effects Error Total 465610.477 17476.710 df 3 1 1 2 56 60 59 Mean Square 2717.161 32903.788 907.833 3175.854 166.522 Corrected Total a R Squared = 466 (Adjusted R Squared = 438) F 16.317 197.594 5.452 19.072 Sig 000 .000 023 000 The type of instrument played in the exam had a significant effect on the level of anxiety experienced, even after the effect of the grade of the exam had been accounted for. O The type of instrument played in the exam had a significant effect on the level of anxiety experienced. O The type of instrument played in the exam did not have a significant effect on the level of anxiety experienced. The type of instrument played in the exam did not have a significant effect on the level of anxiety experienced, even after the effect of the grade of the exam had been accounted for. A music teacher had noticed that some students went to pieces during exams. He wanted to test whether this performance anxiety was different for people playing different instruments. He took groups of guitarists, drummers and pianists (variable = 'Instru') and measured their anxiety (variable = 'Anxiety') during the exam. He also noted the type of exam they were performing (in the UK, musical instrument exams are known as 'grades' and range from 1 to 8). He wanted to see whether the type of instrument played affected performance anxiety when accounting for the grade of the exam. Which of the following statements best reflects what the effect of 'Instru' in the output table below tells us? Dependent Variable: ANXIETY Type III Sum of Squares 8151.482 32903.788 907.833 6351.708 9325.228 Source Corrected Model Intercept GRADE INSTRU Tests of Between-Subjects Effects Error Total 465610.477 17476.710 df 3 1 1 2 56 60 59 Mean Square 2717.161 32903.788 907.833 3175.854 166.522 Corrected Total a R Squared = 466 (Adjusted R Squared = 438) F 16.317 197.594 5.452 19.072 Sig 000 .000 023 000 The type of instrument played in the exam had a significant effect on the level of anxiety experienced, even after the effect of the grade of the exam had been accounted for. O The type of instrument played in the exam had a significant effect on the level of anxiety experienced. O The type of instrument played in the exam did not have a significant effect on the level of anxiety experienced. The type of instrument played in the exam did not have a significant effect on the level of anxiety experienced, even after the effect of the grade of the exam had been accounted for.
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