Register

Probablity-Gravner-58

274 views

1 Answer

1 votes
1 votes
E(X)= 0.2*1+0.3*2+0.5*3

E(X)-0.2 + 0.6 +1.5=2.3

Expected value of X is 2.3
User Avatar
Voting & Accepting an answer helps improve the community
← PreviousNext →
← Previous in categoryNext in category →

Related questions

0 votes
0 votes
0 answers
1
Pooja Khatri asked Sep 27, 2018
417 views
Probability- Gravner- 82.c
Roll a die $n$ times and let $M$ be the number of times you roll $6$. Assume that $n$ is large. (c) How large should $n$ be so that the probability in(b) is larger than $0.99$?
Roll a die $n$ times and let $M$ be the number of times you roll $6$. Assume that $n$ is large.(c) How large should $n$ be so that the probability in(b) is larger than $0...
User Avatar
1 votes
1 votes
1 answer
2
Pooja Khatri asked Sep 27, 2018
624 views
Probability- Gravner- 82.b
Roll a die $n$ times and let $M$ be the number of times you roll $6$. Assume that $n$ is large. (b) Write down an approximation, in terms on $n$ and $\phi$, of the probability that $M$ differs from its expectation by less than $10$ %
Roll a die $n$ times and let $M$ be the number of times you roll $6$. Assume that $n$ is large.(b) Write down an approximation, in terms on $n$ and $\phi$, of the probabi...
User Avatar
0 votes
0 votes
1 answer
3
Pooja Khatri asked Sep 27, 2018
490 views
Probability- Gravner- 82.a
Roll a die $n$ times and let $M$ be the number of times you roll $6$. Assume that $n$ is large. (a) Compute the expectation $EM$.
Roll a die $n$ times and let $M$ be the number of times you roll $6$. Assume that $n$ is large.(a) Compute the expectation $EM$.
User Avatar
1 votes
1 votes
0 answers
4
Pooja Khatri asked Sep 27, 2018
329 views
Probability- Gravner- 81.b
Toss a fair coin twice. You win $1$ dollar if at least one of the two tosses comes out heads. (b) Approximately how many times do you need to play so that you win at least $250$ dollar with probability at least $0.99$.
Toss a fair coin twice. You win $1$ dollar if at least one of the two tosses comes out heads.(b) Approximately how many times do you need to play so that you win at least...
User Avatar
Link Copied!