Please wait...

Mathematics Test - 9
Menu grid icon
Red alarm icon Time Left -
  • Question 1/10
    5 / -1

    A continuous random variable, X is defined in the interval 5 to 15.

    The probability, P(X = 8) is ______.

  • Question 2/10
    5 / -1

    The probability distribution of a discrete random variable W is given below:

    W2345
    P(W)\(\rm \frac{13}{k}\)\(\rm \frac{15}{k}\)\(\rm \frac{17}{k}\)\(\rm \frac{19}{k}\)


    The value of k is?

  • Question 3/10
    5 / -1
    If the mean and the variance of a binomial variate Y are 2 and 1 respectively, then the probability that Y takes a value greater than or equal to one is?
  • Question 4/10
    5 / -1

    For the probability distribution given by 

     X = xi 

     0 

     1 

     2 

     pi

     \(\dfrac{25}{36}\) 

     \(\dfrac{5}{18}\) 

     \(\dfrac{1}{36}\) 


    the standard deviation (σ) is:

  • Question 5/10
    5 / -1

    The value of k for which the function 

    \(f\left( x \right) = \left\{ {\begin{array}{*{20}{c}} {k{e^{ - 3x}},}&{x > 0}\\ 0&{elsewhere} \end{array}} \right.\)

    is probability density function, is

  • Question 6/10
    5 / -1
    If x is a random variable with the expected value of √5  and the standard deviation of 4, then the expected value of x2 is
  • Question 7/10
    5 / -1

    Find the expectation of random variable a?

    a01234
    F(a)1/72/73/74/75/7
  • Question 8/10
    5 / -1
    The mean and variance of a binomial distribution are 8 and 4 respectively, then p(x = 1) is equal to-
  • Question 9/10
    5 / -1
    If a random variable X can assume any positive integer value n with a probability \(\frac{1}{{{3^n}}}\), then the expectation of X is _________.
  • Question 10/10
    5 / -1
    If a fair die is rolled 4 times, then what is the probability that there are exactly 2 sixes?
Close button icon
User Profile
-

Answered - 0

Un-answered - 10

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Mockers logo Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Arrow pointer icon
Click on Allow to receive notifications
Notification bell icon ×
Open Now