Joint Destiny - Random Variable
Two different problems below:
#1.) The following is the joint density for two random variables, X1 and X2:
f(X1, X2): {3X1 for 0<=X2<=X1<=1
0 elsewhere
Find P(0.2<=X2<=0.4)
Which of the following answers:
a.) 0.3750
b.) 0.2720
c.) 0.1800
d.) 0.3(1- X1)^2
#2) Let X be a normal random variable with mean (mew) and std. dev., let
W=(X-mew/std. dev.)^2, Then the distribution for W is :
Which one?
a.) N(mew^2,check mark std, dev.)
b.) N(mew^2, std. dev.^2)
c.) N(check mark mew, std. dev.^2)
d.) X^2(1)
Solution Preview
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Random Variables
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Two different problems below:
#1.) The ...
Solution Summary
Two different problems below:
#1.) The following is the joint density for two random variables, X1 and X2:
f(X1, X2): {3X1 for 0<=X2<=X1<=1
0 elsewhere
Find P(0.2<=X2<=0.4)
Which of the following answers:
a.) 0.3750
b.) 0.2720
c.) 0.1800
d.) 0.3(1- X1)^2
#2) Let X be a normal random variable with mean (mew) and std. dev., let
W=(X-mew/std. dev.)^2, Then the distribution for W is :
Which one?
a.) N(mew^2,check mark std, dev.)
b.) N(mew^2, std. dev.^2)
c.) N(check mark mew, std. dev.^2)
d.) X^2(1)