A random variable (RV), x is distributed with a pdf as follows:
fX(x) = [C × x × (1 – x)] 0 ? x ? a (C and a are constants)
= 0 otherwise
Hence, determine the following: (i) C; (ii) cumulative probability of x in the range, [(u × a) ? x ? (v × a)]; where u and v are fractions; (iii) E[x]; (iv) second moment of x; and, (v) standard deviation of x. Assume: a = 1.15, u = 0.58 and v = 0.86.
Hence, choose the correct set of answers in the multiple-choices listed:
Multiple-choices on the answer-set
Choices |
(i) C |
(ii) cdf [ua ? x ? va] |
(iii) E[x] |
(iv) m2 |
(v) sigma(x) |
1 |
6.446 |
0.2838 |
0.450 |
0.223 |
0.141 |
2 |
6.570 |
0.2735 |
0.451 |
0.255 |
0.154 |
3 |
6.711 |
0.2652 |
0.510 |
0.231 |
0.165 |
4 |
6.481 |
0.2877 |
0.452 |
0.227 |
0.150 |
5 |
6.802 |
0.2858 |
0.455 |
0.233 |
0.164 |