| Tag | Value |
|---|---|
| file | Distributions_uva-distribution-862-en_uva-distribution-862-en |
| name | uva-distribution-862-en |
| section | Distributions/Continuous/t-distribution |
| type | schoice |
| solution | FALSE, FALSE, TRUE |
| Type | Conceptual, Calculation |
| Language | English |
| Level | Statistical Literacy |
| IRT-Difficulty | 3.719 |
| p-value | 0.1686 |
In a confidence interval for a mean, the z-score should be must be replaced by a t-score when the population standard deviation σ is unknown. When such an interval is based on a sample of 12 observations, that t-score at a confidence level of 95% is equal to