Solution
Take for example in the Ukraine Russia war,
Data and probability can be used to determine the number of death tolls.
Probability can be used to estimate likelihood of Russia making moves.
Answer:
2.6
Step-by-step explanation:
Given :
x 1 2 3 4
P(x) 0.3 0.2 ? 0.4
Σp(x) = 1
Hence, 0.3 + 0.2 +? + 0.4 = 1
0.9 +? = 1
? = 1 - 0.9
? = 0.1
For the mean :
E(X) = ΣX*P(X)
(1 * 0.3) + (2 * 0.2) + (3 *0.1) + (4* 0.4)
0.3 + 0.4 + 0.3 + 1.6 = 2.6
Hence, the mean = 2.6
Answer:
4x^2
Step-by-step explanation:
10:4, 15:6, and 20:8. All you do is add the original ratio to its self
If I am right, then it would be 4!, which would equal 24 different rankings. (sorry if it is wrong.)
