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Continuous random variables and the normal distribution — Question 256

Original QCE Vault practice · 1 mark

Q256 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 256

A random variable has probability density

f(x)=kx

for

0\leq x\leq2

, and zero otherwise. What is

k

?

Density f(x)=x/2 on [0,2], rising linearly from (0,0) to (2,1); zero outside the support.

(A)

\dfrac14

(B)

1

(C)

\dfrac12

(D)

2

ABCD

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