Question

How many rolls of two dice are needed so that the probability of rolling a double six within this number of rolls is at least $50\%$?

score 284 · Answer 1 · 2016-03-16 04:28:37

284

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How many rolls of two dice are needed so that the probability of rolling a double six within this number of rolls is at least $50\%$?

Published on 16 Mar 2016 - 4:28

score 2.7k · Answer 2 · 2026-02-23 18:48:14

2.7k

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What are the expected value and the standard deviation of the number of games the final will take?

Published on 23 Feb 2026 - 18:48

score 192 · Answer 3 · 2016-03-18 06:52:26

192

Views

Let $X,Y$ be the number of heads from two coins. What is $P(X=Y)$?

Published on 18 Mar 2016 - 6:52

score 158 · Answer 4 · 2016-03-20 11:01:12

158

Views

Binomial distribution: $P(\mbox{blue} \cap \mbox{red}) \ne P(\mbox{pick a blue and red in any order)}$?

Published on 20 Mar 2016 - 11:01

score 123 · Answer 5 · 2016-03-20 11:20:51

123

Views

Normal approxiamation to Binomial distribution

Published on 20 Mar 2016 - 11:20

score 226 · Answer 6 · 2026-03-27 02:37:39

226

Views

Bernoulli trial: probability of even times of sum of $7$.

Published on 27 Mar 2026 - 2:37

score 64 · Answer 7 · 2016-03-21 02:04:44

64

Views

Help with series definition, binomial theorem?

Published on 21 Mar 2016 - 2:04

score 46 · Answer 8 · 2016-03-21 22:19:28

46

Views

If $X$ follows a binomial distribution, then what is $P(1.25<X<1.75)$?

Published on 21 Mar 2016 - 22:19

score 115 · Answer 9 · 2016-03-22 01:43:48

115

Views

How do I find the Bernoulli Variance for three players shooting at a target with different probabilities of success?

Published on 22 Mar 2016 - 1:43

score 1.7k · Answer 10 · 2016-03-24 00:31:26

1.7k

Views

Find $P(Z>1.8)$ and $P(X>4)$ when $Z$ is normal RV and $X$ is a binomial RV.

Published on 24 Mar 2016 - 0:31

score 713 · Answer 11 · 2016-03-25 07:06:39

If the probability of a succesful log in is $0.8$, then what is the probability that there will be less than five succesful attempts in ten tries?

score 1.5k · Answer 12 · 2016-03-25 07:31:06

1.5k

Views

To improve the accuracy, a majority vote is taken. What is the probability of an incorrect classification?

Published on 25 Mar 2016 - 7:31

score 79 · Answer 13 · 2016-03-27 13:49:18

79

Views

Is this a valid proof using induction?

Published on 27 Mar 2016 - 13:49

score 893 · Answer 14 · 2016-03-27 16:44:05

893

Views

Probability in a survey

Published on 27 Mar 2016 - 16:44

score 2.5k · Answer 15 · 2016-03-28 05:30:35

2.5k

Views

Aa student takes a $10$-question true/false exam and guesses. What is the probability that the student answers every question incorrectly?

Published on 28 Mar 2016 - 5:30

List Question

How many rolls of two dice are needed so that the probability of rolling a double six within this number of rolls is at least $50\%$?

What are the expected value and the standard deviation of the number of games the final will take?

Let $X,Y$ be the number of heads from two coins. What is $P(X=Y)$?

Binomial distribution: $P(\mbox{blue} \cap \mbox{red}) \ne P(\mbox{pick a blue and red in any order)}$?

Normal approxiamation to Binomial distribution

Bernoulli trial: probability of even times of sum of $7$.

Help with series definition, binomial theorem?

If $X$ follows a binomial distribution, then what is $P(1.25<X<1.75)$?

How do I find the Bernoulli Variance for three players shooting at a target with different probabilities of success?

Find $P(Z>1.8)$ and $P(X>4)$ when $Z$ is normal RV and $X$ is a binomial RV.

If the probability of a succesful log in is $0.8$, then what is the probability that there will be less than five succesful attempts in ten tries?

To improve the accuracy, a majority vote is taken. What is the probability of an incorrect classification?

Is this a valid proof using induction?

Probability in a survey

Aa student takes a $10$-question true/false exam and guesses. What is the probability that the student answers every question incorrectly?

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