5 give Brainly then I’ll help with all the other ones
Answer:
0.06
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given that X and Y are independent random variables with the following distributions:
x -1 10 1 2 Total
p 0.3 0.1 0.5 0.1 1
xp -0.3 1 0.5 0.2 1.4
x^2p 0.3 10 0.5 0.4 11.2
Mean of X = 1.4
Var(x) = 11.2-1.4^2 = 9.24
y 2 3 5
p 0.6 0.3 0.1 1
yp 1.2 0.9 0.5 0 2.6
y^2p 2.4 2.7 2.5 0 7.6
Mean of Y = 2.6
Var(Y) = 11.2-1.4^2 = 0.84
3) W=3+2x
Mean of w =3+2*Mean of x = 7.2
Var (w) = 0+2^2 Var(x)= 36.96
Step-by-step explanation:
x² + 2x
x(x + 2)
<u>OR</u>
x² + 2x = 0
x(x + 2) = 0
x = 0 or x + 2 = 0
x = 0 or x = - 2
So (f-g)(x) is f(x)-g(x) so you have
(3x+10)-(2x-4)
Distribute the negative in to the 2x-4 to get
3x+10-2x+4
Then combing like terms you have
3x-2x+10+4
And then that gives you
x+14
So (f-g)(x)=x+14
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