Binomial probability is given by
P(X=x) = C(n,x)*px*(1-p)(n-x)
Sample size , n = 5
Probability of an event of interest, p = 0.53
P ( X = 0) = C (5,0) * 0.53^0 * ( 1 - 0.53)^5= | 0.0229 | |
P ( X = 1) = C (5,1) * 0.53^1 * ( 1 - 0.53)^4= | 0.1293 | |
P ( X = 2) = C (5,2) * 0.53^2 * ( 1 - 0.53)^3= | 0.2916 | |
P ( X = 3) = C (5,3) * 0.53^3 * ( 1 - 0.53)^2= | 0.3289 | |
P ( X = 4) = C (5,4) * 0.53^4 * ( 1 - 0.53)^1= | 0.1854 | |
P ( X = 5) = C (5,5) * 0.53^5 * ( 1 - 0.53)^0= | 0.0418 |
answer is:
X | P(X<=K) | |
0 | 0.0229 | |
1 | 0.1522 | |
2 | 0.4439 | |
3 | 0.7728 | |
4 | 0.9582 | |
5 | 1.0000 |
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