81
MCQ (Single Correct Answer)
If eight coins are tossed together, then the probability of getting exactly 3 heads is
A
$\frac{1}{256}$
B
$\frac{7}{32}$
C
$\frac{5}{32}$
D
$\frac{3}{32}$
82
MCQ (Single Correct Answer)
Two dice are thrown. If it is known that the sum of numbers on the dice was less than 6 , the probability of getting a sum 3 , is
A
$\frac{1}{18}$
B
$\frac{5}{18}$
C
$\frac{1}{5}$
D
$\frac{2}{5}$
83
MCQ (Single Correct Answer)
Which one is not a requirement of a Binomial distribution?
A
There are 2 outcomes for each trial
B
There is a fixed number of trials
C
The outcomes must be dependent on each other
D
The probability of success must be the same for all the trials
84
MCQ (Single Correct Answer)
If two cards are drawn from a well shuffled deck of 52 playing cards with replacement, then the probability that both cards are queens, is
A
$\frac{1}{13} \cdot \frac{1}{13}$
B
$\frac{1}{13}+\frac{1}{13}$
C
$\frac{1}{13} \cdot \frac{1}{17}$
D
$\frac{1}{13} \cdot \frac{4}{51}$
85
MCQ (Single Correct Answer)
The probability of guessing correctly atleast 8 out of 10 answers on a true false type examination is
A
$\frac{7}{64}$
B
$\frac{7}{128}$
C
$\frac{45}{1024}$
D
$\frac{7}{41}$