If the table below represents a probability model based on observed frequencies, what is the value of x?
Y C A R E S
P(Y) 0.25 0.18 0.30 0.17 x
(1 point)
Responses
0.01
0.01
1
1
0.20
0.20
0.10
The sum of all probabilities in a probability model must add up to 1. Therefore, the value of x can be determined by subtracting the sum of the other probabilities from 1:
0.25 + 0.18 + 0.30 + 0.17 + x = 1
0.90 + x = 1
x = 0.10
Therefore, the value of x is 0.10.