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Bjehnsen3720
23.11.2020 •
Mathematics
An android length is 4x + 7 and the width is 5
Find the Area =
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Ответ:
Sorry my account got hacked for 1500 points and I'm trying to get them back have a good day tho
Step-by-step explanation:
Ответ:
idk
Step-by-step explanation:
Ответ:
Step-by-step explanation:
We are given the joint probability distribution of the random variables. Then we should just add the values given, accroding to the case we are asked about.
a. P(X=2)=0.2(2 1 1)+0.15(2 1 2) +0.1 (2 2 1) +0.05(2 2 2) =0.5 (We need to add all the values for which X = 2, the values of Y,Z are irrelevant)
b. P(X=1, Y=2) = 0.15+0.2 = 0.35
c. P(Z<1.5)=P(Z=1) = 0.05+0.15+0.2+0.1=0.5 (This means, having Z=1)
d. P(X=1 or Z=2) = P(X=1)+P(Z=2) - P(X=1 and Z=2) (This is using the properties of probability of the union of two events).
P(X=1)= 0.05+0.1+0.15+0.2 = 0.5
P(Z=2) = 0.1+0.2+0.15+0.5 = 0.5
P(X=1 and Z=2) = 0.1+0.2 = 0.3
P(X=1 or Z=2 ) = 0.5+0.5-0.3 = 0.7