There are 3 SPSS outputs in this homework assignment. Thequestions for each output are listed below. Please type youranswers into this word document and submit it as an attachment inthe assignment tab.
Q1. Researchers were interested in determining whetherbackground music helped or hindered students’ performance on a mathtest. Students were randomly assigned to 1 of 3 groups: 1) nomusic; 2) music only; and 3) music with lyrics. Students were thengiven a math exam, scores which could range from 0 to 100.
- State the null and alternate hypotheses.
- What is the total sample size
- Identify the independent and dependent variables
- What is the test statistic value
- What is the p value
- What is your conclusion (assume α = .05). Phrase yourconclusion based on your hypotheses.
- Do we need a post hoc analysis Why or why not
| N | Mean | Std. Deviation | Std. Error | 95% ConfidenceInterval for Mean |
Lower Bound | Upper Bound |
No music | 250 | 77.59 | 13.055 | .826 | 75.96 | 79.21 |
Music only | 250 | 78.10 | 13.357 | .845 | 76.44 | 79.77 |
Music and lyrics | 250 | 78.97 | 13.263 | .839 | 77.32 | 80.62 |
Total | 750 | 78.22 | 13.221 | .483 | 77.27 | 79.17 |
ANOVA |
minutes |
| Sum of Squares | df | Mean Square | F | Sig. |
Between Groups | 244.595 | 2 | 122.297 | .699 | .497 |
Within Groups | 130668.664 | 747 | 174.925 | | |
Total | 130913.259 | 749 | | | |
