441. In a binomial distribution, n = 10 p= 3/5, its mean is:_________________?

A. 6
B. 1
C. 2/5
D. None of these

442. For a binomial distribution with n = 15 as p changes from. 50 toward. 05 the distribution will__________?

A. Become more positively skewed
B. Become more negatively skewed
C. Become symmetrical
D. All of the above.

443. When ‘n’ becomes very large, binomial distribution tends to ______________?

A. Poisson dist
B. Standard dist
C. Normal dist
D. Hyper-geometric distribution

444. If mean of the binomial probability distribution is 4.8, then variance of this distribution is :_______________?

A. -2.3
B. 5.3
C. -4.8
D. 2.3

445. The mean and the variance are equal in________________?

A. All probability distribution
B. The hypergeometric distribution
C. The binomial distribution
D. The Poisson distribution

446. Binomial word discovered at the end of ________________?

A. 14th century
B. 12th century
C. 10th century
D. 17th century

447. Binomial probability distribution is denoted by b(x ; n, p), is defined as _______________?

A. {nx}px qn-x
B. {nx}px(1 – P)x-n
C. nCxpnqnx
D. {nx}p(1 – P)x

448. What is the mean of binomial distribution ____________?

A. X
B. n x p
C. n(1 – 1)
D. ∑fx/∑f

449. The binomial distribution is symmetrical when:______________?

A. P > q
B. P = 1/2
C. Probability of success & probability of failure are equal
D. Both (b) & (c) but not (a)

450. Which of the following case is true for hyper geometric distribution________________?

A. Probability remains constant for all the trials.
B. Probability changes from trial to trial
C. Successive trial are dependent
D. Both (b) & (c) but not (a)


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