For distribution Function F(X),F(-∞)=0 and F(∞)= ?

Related Mcqs:

1. If the sampled population has a normal distribution, when is the sampling distribution of the sample mean X also a normal distribution ?

   A. Only when the sample size is at least 100.
   B. Only when the sample size is smaller than 30
   C. Always
   D. Only when the sample size is at least 30.

2. If a distribution is abnormally tall and peaked, then is can be said that the distribution is_____________?

   A. Leptokurtic
   B. Pyrokurtic
   C. Platykurtic
   D. Mesokurtic

3. If a distribution has two modes then this distribution is called______________?

   A. Uni-Modal
   B. Bi-Modal
   C. Tri-Modal
   D. Multi-Modal
   E. None of these

4. If in a sampling distribution of X the sample size is 25, what assumption must hold for the sampling distribution of X to be normal ?

   A. Population distribution is normal
   B. μ1 = μx
   C. Population distribution is uniform
   D. σx = σx /√n

5. In a binomial distribution, n = 20 and p = 3/5, then variance of this distribution ______________?

   A. 60
   B. 12
   C. 4.8
   D. 0

6. if in a binomial probability distribution mean and variance are 6 and 2.4 respectively, then the parameters of this distribution are:____________________?

   A. n = 10, p = 6/10
   B. n = 50, p = 6/50
   C. n = 10, p = 3/5
   D. n = 10, p = 2/5

7. __________ of the distribution which is measured relative to the distribution known as Normal?

   A. Skewed
   B. Flatness
   C. Normal
   D. Moment

8. Normal distribution is a probability distribution of _____ random variable?

   A. Continuous
   B. Constant
   C. Discrete
   D. Normal

9. Every distribution tends to ____ distribution?

   A. Small
   B. ∞
   C. Large
   D. Finite

10. When in a frequency distribution the maximum frequency occur at one end, then the frequency curve of such distribution is ________________?

    A. J- shaped
    B. U- shaped
    C. Bell- shaped
    D. V- shaped