Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B2

Chapter

Probability Distributions

Question:

Four bad apples are accidently mixed with sixteen good apples. Let X denote the number of bad apples in a random draw of two apples. Then

A. $P(X=0)=\frac{12}{19}$

B. $E(X)=\frac{3}{5}$

C. Standard Deviation of $X=\frac{12}{5\sqrt{19}}$

D. $P(X+2)=\frac{32}{95}$

E. $Var(X)=\frac{144}{475}$

Choose the correct answer from the options given below :

Options:

A, B, C, E

A, B, D

A, C, E

B, C, E

Correct Answer:

A, C, E