(See Steps) Perform an analysis of covariance at a significance level of 0.05 to test whether the effect of noise is significant for the variable number
Question: Perform an analysis of covariance at a significance level of 0.05 to test whether the effect of noise is significant for the variable number of syllables remembered. Consider the result of the verbal intelligence test as a covariate.
| Group 1 | Group 2 | Group 3 | |||
| Number of syllables remembered | Verbal intelligence test result | Number of syllables remembered | Verbal intelligence test result | Number of syllables remembered | Verbal intelligence test result |
| 8 | 14 | 7 | 15 | 4 | 14 |
| 10 | 16 | 8 | 17 | 8 | 17 |
| 9 | 15 | 5 | 15 | 7 | 16 |
| 10 | 16 | 8 | 17 | 5 | 16 |
| 9 | 15 | 5 | 15 | 7 | 16 |
Now check the assumptions of the analysis of covariance and interpret the results.
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