| Tag | Value |
|---|---|
| file | Inferential_Statistics_vufsw-paired_samples-1131-en_vufsw-paired_samples-1131-en |
| name | vufsw-paired samples-1131-en |
| section | inferential statistics/parametric techniques/t-test/paired samples |
| type | schoice |
| solution | FALSE, FALSE, TRUE, FALSE |
| Type | performing analysis |
| Program | calculator |
| Language | English |
| Level | statistical literacy |
In an experiment, 20 randomly selected subjects receive training to improve their mathematics skills. Their performance was measured before the training took place (measurement 1) and afterwards (measurement 2) on a scale of 1 to 10. A higher number means better performance. The results can be found below. A researcher wants to check whether the training increases the score and tests one-sided with alpha = 0.05.
| N | mean score measurement 1 (before) | mean score measurement 2 (afterwards) | mean difference | standard error (se) of the mean score difference |
| 20 | 5.75 | 6.35 | 0.60 | 0.24 |
Calculate the t-value associated with testing the researcher’s hypothesis.
Dependent t-test
H0 mean(2)-mean (1)=0
Ha mean (2)-mean (1) does not equal 0
t=(mean(2)-mean(1))/se= 0.6/0.24= 2.5
If you want to know more about the dependent t test watch this clip
Language
Nederlands
Levels of Difficulty
Difficult
M&T BIS
Default value
M&T Hypothesis testing: means
Default value