| Tag | Value |
|---|---|
| file | Probability_uva-elementary-probability-1005-en_uva-elementary-probability-1005-en |
| name | uva-elementary-probability-1005-en |
| section | Probability/Elementary Probability |
| type | schoice |
| solution | FALSE, FALSE, FALSE, TRUE |
| Type | Conceptual |
| Language | English |
| Level | Statistical Literacy |
| IRT-Difficulty | 1.508 |
| p-value | 0.8602 |
A screw head can have different shapes: (a) hexagonal, (b) convex, (c) countersunk, (d) cylinder, (e) countersunk with hexagon, (f) countersunk with cross, (g) knurled screw. A factory has 1000 screw heads made of each shape. We call the events:‖
* A = {the spherical head screws}.
* B = {the countersunk head screws}.
* C = {the countersunk hex head screws}. What then is the probability of A U B?