Homework SourseA study of visual and auditory reaction time is conducted fo
A study of visual and auditory reaction time is conducted for a group of college basketball players. Visual reaction time is measured by the time needed to respond to a light signal, and auditory reaction time is measured by the time needed to respond to the sound of an electric switch. Fifteen subjects were measured with time recorded to the nearest millisecond: Subject: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 Visual: 161, 203, 235, 176, 201, 188, 228, 211, 191, 178, 159, 227, 193, 192, 212 Auditory: 157, 207, 198, 161, 234, 197, 180, 165, 202, 193, 173, 137, 182, 159, 156 Is there evidence that the visual reaction time tends to be slower than the auditory reaction time?
Solution
Null hypothesis: H0: visual reaction time is equals to the auditory reaction time
Alternative hyp: H1: visual reaction time tends to be slower than the auditory reaction time
From SPSS
Conclusiuon: P value=0.111 > alpha(0.05) , we accept the null hypothesis.
| Ranks | ||||
| N | Mean Rank | Sum of Ranks | ||
| auditory - visual | Negative Ranks | 9a | 9.78 | 88.00 |
| Positive Ranks | 6b | 5.33 | 32.00 | |
| Ties | 0c | |||
| Total | 15 | |||
| a. auditory < visual | ||||
| b. auditory > visual | ||||
| c. auditory = visual |
