Metainformation
| Tag | Value |
|---|---|
| file | Inferential_Statistics_uu-Independent-samples-means-802-en_uu-Independent-samples-means-802-en |
| name | uu-Independent-samples-means-802-en |
| section | Inferential Statistics/Parametric Techniques/t-test/Independent samples means |
| type | schoice |
| solution | FALSE, FALSE, FALSE, TRUE |
| Type | Interpretating output |
| Language | English |
| Level | Statistical Literacy |
Question
In a study of the effect of preferred hand on driving ability, 217 subjects were randomly drawn from the population of car drivers who were followed for 2 years. During that period, the 27 left-handed subjects made an average of 1.3 car accidents and the 190 right-handed subjects made 0.77 car accidents. Based on these data, a two-sided t-test for two independent groups was performed with α = 5%. What do you conclude from the SPSS output shown below regarding equality of variances and significance of the effect of preferred hand on the number of accidents?
- FALSE: The variances are equal and left-handers make significantly more accidents.
- FALSE: The variances are equal and left-handers do not make significantly more accidents.
- FALSE: The variances are unequal and left-handers make significantly more accidents.
- TRUE: The variances are unequal and left-handed people do not make significantly more accidents.