Suppose X is a Binomial random variable for which there are 4 independent trials and probability of success 0.4. What is P(X > 0)?
a. |
0.528 |
|
b. |
0.1640 |
|
c. |
0.8704 |
|
d. |
0.4 |
|
e. |
0.7638 |
n = 4
P = 0.4
It is a binomial distribution.
P(X = x) = nCx * px * (1 - p)n - x
P(X > 0) = 1 - P(X < 0)
= 1 - (4C0 * (0.4)^0 * (0.6)^4)
= 1 - 0.1296
= 0.8704
Option - c is correct.
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