Recent questions tagged binomial-distribution

0 votes

1 answer

1

Hk Dass
In a binomial distribution the sum and the product of mean and variance are $\Large \frac{25}{3}$ and $\Large \frac{50}{3}$ respectively. The distribution is _______. Note : I've not included the options to avoid KBC in comments

asked Aug 31 in Probability by Mk Utkarsh Boss (29.8k points) | 67 views

0 votes

1 answer

2

Probability
We have applied Bernoulli equation to solve the answer. But, why the answer isn't C(90,5)÷C(100,5)?

asked Aug 9 in Probability by Arjun045 (9 points) | 31 views

+10 votes

3 answers

3

GATE2018-GA-10
A six sided unbiased die with four green faces and two red faces is rolled seven times. Which of the following combinations is the most likely outcome of the experiment? Three green faces and four red faces. Four green faces and three red faces. Five green faces and two red faces. Six green faces and one red face

asked Feb 14 in Numerical Ability by gatecse Boss (18.3k points) | 2.5k views

+1 vote

1 answer

4

$a_n = 4^n + 6^n$
If $a_n = 4^n + 6^n$ Find the value of $a_{40} \text { mod } 25$

asked May 19, 2017 in Set Theory & Algebra by Debashish Deka Veteran (57.6k points) | 120 views

+2 votes

1 answer

5

Hashing+Probaility

asked Oct 8, 2016 in DS by Rahul Jain25 Boss (11.6k points) | 237 views

+6 votes

2 answers

6

TIFR2011-A-3
The probability of three consecutive heads in four tosses of a fair coin is. $\left(\dfrac{1}{4}\right)$ $\left(\dfrac{1}{8}\right)$ $\left(\dfrac{1}{16}\right)$ $\left(\dfrac{3}{16}\right)$ $\text{None of the above.}$

asked Oct 17, 2015 in Probability by makhdoom ghaya Boss (40.5k points) | 341 views

+8 votes

4 answers

7

TIFR2010-B-38
Suppose three coins are lying on a table, two of them with heads facing up and one with tails facing up. One coin is chosen at random and flipped. What is the probability that after the flip the majority of the coins(i.e., at least two of them) will have heads facing up? ... $\left(\frac{1}{4}\right)$ $\left(\frac{1}{4}+\frac{1}{8}\right)$ $\left(\frac{2}{3}\right)$

asked Oct 11, 2015 in Probability by makhdoom ghaya Boss (40.5k points) | 703 views

+7 votes

1 answer

8

TIFR2010-A-6
Given 10 tosses of a coin with probability of head = .$4$ = ($1$ - the probability of tail), the probability of at least one head is? $(.4)^{10}$ $1 - (.4)^{10}$ $1 - (.6)^{10}$ $(.6)^{10}$ $10(.4) (.6)^{9}$

asked Oct 2, 2015 in Probability by makhdoom ghaya Boss (40.5k points) | 327 views

+28 votes

4 answers

9

GATE2005-IT-32
An unbiased coin is tossed repeatedly until the outcome of two successive tosses is the same. Assuming that the trials are independent, the expected number of tosses is $3$ $4$ $5$ $6$

asked Nov 3, 2014 in Probability by Ishrat Jahan Boss (19.1k points) | 3.9k views

+16 votes

3 answers

10

GATE2006-IT-22
When a coin is tossed, the probability of getting a Head is $p, 0 < p < 1$. Let $N$ be the random variable denoting the number of tosses till the first Head appears, including the toss where the Head appears. Assuming that successive tosses are independent, the expected value of $N$ is $\dfrac{1}{p}$ $\dfrac{1}{(1 - p)}$ $\dfrac{1}{p^{2}}$ $\dfrac{1}{(1 - p^{2})}$

asked Oct 31, 2014 in Probability by Ishrat Jahan Boss (19.1k points) | 1.6k views

+10 votes

5 answers

11

GATE2005-52
A random bit string of length n is constructed by tossing a fair coin n times and setting a bit to 0 or 1 depending on outcomes head and tail, respectively. The probability that two such randomly generated strings are not identical is: $\frac{1}{2^n}$ $1 - \frac{1}{n}$ $\frac{1}{n!}$ $1 - \frac{1}{2^n}$

asked Sep 21, 2014 in Probability by gatecse Boss (18.3k points) | 1.3k views

+11 votes

4 answers

12

GATE2006-21
For each element in a set of size $2n$, an unbiased coin is tossed. The $2n$ coin tosses are independent. An element is chosen if the corresponding coin toss was a head. The probability that exactly $n$ elements are chosen is $\frac{^{2n}\mathrm{C}_n}{4^n}$ $\frac{^{2n}\mathrm{C}_n}{2^n}$ $\frac{1}{^{2n}\mathrm{C}_n}$ $\frac{1}{2}$

asked Sep 17, 2014 in Probability by Rucha Shelke Active (3.7k points) | 1.7k views

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