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| bio | website | |
|---|---|---|
| location | ||
| age | 50 | |
| visits | member for | 2 years, 3 months |
| seen | May 15 at 22:44 | |
| stats | profile views | 2,064 |
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May 15 |
comment |
Difference of normal r.v's. Please check my answer. @DepeHb: Yes to the question in your comment |
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May 15 |
awarded | probability-theory |
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May 7 |
comment |
“Square root” of a normal RV? Here is one possible approach, though I have no idea whether it is useful: (a) take $Y=\log_e |N|$ where $N$ has a standard normal distribution, (b) find the characteristic function of $Y$, (c) take its square root, and (d) determine whether this is the characteristic function of a probability distribution. If it is, say of $Y_1$, then take $X_1 = Z_1 \exp(Y_1)$ where $Z_1=+1 \text{ or }-1$ with equal probability, independently of $Y_1$; $X_2$ would have the same distribution but be independent of $X_1$. |
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May 7 |
comment |
Distribution of sum of independent random variables @Ashok: If you had a point mass at $0$ and a similar point mass at $\frac12$ then the density would be twice as high just above above $\frac12$ as just above $0$ |
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May 7 |
comment |
standard error in a dice betting game Exercise 22-4 looks slight different to me, and gives the solution if you click |
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May 7 |
awarded | Caucus |
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May 1 |
awarded | probability-distributions |
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Apr 30 |
answered | Distribution of sum of independent random variables |
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Apr 30 |
answered | Count the number of selecting 5 numbers |
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Apr 30 |
awarded | Nice Answer |
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Apr 26 |
comment |
Confused between normal and binomial dist. Independent because you need to assume it to answer the question (how does the weight of the first fish affect the weight of the second fish). Binomial because you want the probability of a certain number of successes form a certain larger number of attempts. $0.3085$ comes from the normal distribution for the probability that a fish weighs more than $1.4$kg. Each of these are rather basic statistics questions which you have probably just been taught. |
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Apr 26 |
answered | Can anyone explain NBA lottery to me? |
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Apr 26 |
answered | Confused between normal and binomial dist. |
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Apr 26 |
reviewed | Close Show that: A quotient Space of X is T1 iff each element |
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Apr 26 |
reviewed | Approve suggested edit on Confused between normal and binomial dist. |
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Apr 26 |
comment |
Compound discount and an infinite number costs a total of $100 |
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Apr 24 |
answered | Moment generating functions and normal random variables. |
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Apr 24 |
answered | Solving recursive sequence using generating functions |
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Apr 20 |
comment |
Complicated integral Integration by parts $w$ times will give you a sum of terms |
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Apr 20 |
comment |
Simulate random sampling with replacement I am not sure what "independently" means in this context, but you should be able to calculate the probability of a given sample of $c$ balls with replacement from $n$ and then the probability of drawing the same $c$ balls in your more complicated setup. Depending on $c$ and $d$, there may be a particular pattern of sample in the standard arrangement which cannot possibly be reproduced in the complicated one |
