71. |
The mean and variance of a binomial distribution are 4 and 2 respectively. Then the probability of 2 successes is _____ .
|
||||||||
Answer:
Option (d) |
72. |
If two coins are tossed 5 times, then the probability of getting 5 heads and 5 tails is _____ .
|
||||||||
Answer:
Option (a) |
73. |
Five horses are in a race, Mr. A selects two of the horses at random and bets on them. The probability that Mr. A selected the winning horse is _____ .
|
||||||||
Answer:
Option (b) |