Question: 1) Suppose X is a continuous random variable with the pdf defined as below: f(x) = 9 1 2 , 0 < x < 3.
1) Suppose X is a continuous random variable with the pdf defined as below:
f(x) =912, 0 < x < 3.
True or false? The median of X is 1.5.
2) Suppose X is a continuous random variable with the pdf defined as below:
f(x) =912, 0 < x < 3.
What is P(X=2)?
3) Suppose X is a continuous random variable with the pdf defined as below:
f(x) =912, 0 < x < 3.
What is f(2)?
4) Let f(x) = kx where x is between 0 and 2. What is the value of k that makes this a legitimate density function?
a) None of the other choices is correct
b) 2
c) 1/2
d) 4
5) With a continuous random variable, P(a < X < b) is the area under the curve f(x) between a and b.
a) True
b) False
6) Let f(x) =3x2 for 0 < x < 1.
What is P(X < 1/2)? Choose the closest answer!
a) 1/8
b) 1/2
c) 1
d) 1/4
7) Let f(x) =3x2 for 0 < x < 1.
What is the mean of X? Choose the closest answer!
a) 2/4
b) 1/4
c) 1
d) 3/4
8) Let f(x) =3x2 for 0 < x < 1.
What is the median of X? Choose the closest answer!
a) .8
b) .4
c) .2
d) .6
9) Let f(x) =3x2 for 0 < x < 1.
True or False? P(X < 1/2) = P(X <= 1/2)
10) Suppose f(x) = 1/2 where 0 < X < 2.
True or false? The median of X is 0.50.
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