Q1 of 77 Page 32

If a random variable X has the following probability distribution:

Then the value of a is


The probability distribution of X is:



We Know that



Therefore,


⇒ a+3a+5a+7a+9a+11a+13a+15a+17a=1


⇒ 81a=1



Option (A) is incorrect because by putting , the sum total of pxi is not equal to 1


Option (B) is incorrect because by putting , the sum total of pxi is not equal to 1


Option () is incorrect because by putting , the sum total of pxi is not equal to 1

More from this chapter

All 77 →
6

If the probability distribution of a random variable X is as given below:

Write the value of P (X ≤ 2).


 7

A random variable has the following probability distribution:

Write the value of P (X ≥3).


 2

A random variable X has the following probability distribution:

For the events E = {X: X is a prime number}, F = {X: X < 4}, the probability P (E ∪ F) is


 3

A random variable X takes the values 0, 1, 2, 3 and its mean is 1.3. If P (X =3) = 2P (X = 1) and P(X = 2) = 0.3, then P(X = 0) is