Example 1
Probability function of a discrete random
variable is given in the table
x |
0 |
1 |
2 |
P(x) |
0.3 |
0.6 |
0.1 |
a) Determine the value of the distribution
function at point x = 6.
b) Determine the expected value.
Example 2
Calculate the expected value of the continuous
random variable with the density function
for
= 0 otherwise
Example 3
A certain
party received 25% of the votes in an election. Determine the probability that among
the 10 voters addressed there will be no more than 4 voters of that party.
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15 | 16 | 17 | 18 | 19 | 20 | 21 |
22 | 23 | 24 | 25 | 26 | 27 | 28 |
29 | 30 | 1 | 2 | 3 | 4 | 5 |