MCQ
The angle between the lines 2x = 3y = -z and 6x = -y = -4z is
- A45º
- B30º
- C0º
- ✓90º
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If the p.d.f. of a r.v. $X$ is given as
| $x_i$ | -2 | -1 | 0 | 1 | 2 |
| $P\left(X=x_i\right)$ | 0.2 | 0.3 | 0.15 | 0.25 | 0.1 |
then $F(0)=$