| Tag | Value |
|---|---|
| file | Probability_uva-expected-value-653-en_uva-expected-value-653-en |
| name | uva-expected-value-653-en |
| section | Probability/Elementary Probability/Random variables/Expected value |
| type | num |
| solution | 0.4 |
| tolerance | 0 |
| Type | Calculation |
| Language | English |
| Level | Statistical Literacy |
| IRT-Difficulty | 1.928 |
| p-value | 0.7999 |
A closed box contains five balls: three red and two yellow. If you pick one ball, what is the probability that it is a yellow ball? (Give the answer with one decimal place).
The correct answer is: 0.4