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Search: Posts Made By: The Disreputable Dog
Forum: MAS-I 11-08-2019, 01:11 PM
Replies: 9
Views: 1,155
In ASM question 38.15 we're given that X1-X6...

In ASM question 38.15 we're given that X1-X6 follow a standard normal distribution. We're then told that we define a value of S^2 as the unbiased sample variance of X1-X4. The solution says that...
Forum: MAS-I 11-08-2019, 01:04 PM
Replies: 9
Views: 1,155
:party:

:party:
Forum: MAS-I 11-04-2019, 11:58 AM
Replies: 9
Views: 1,155
Thanks, Dr. Weishaus. That's exactly where I...

Thanks, Dr. Weishaus. That's exactly where I went wrong.
Forum: MAS-I 11-03-2019, 03:32 PM
Replies: 9
Views: 1,155
Should the solution to ASM quiz 35-1 on pg. 537...

Should the solution to ASM quiz 35-1 on pg. 537 use 500/20 instead of 500/19?
Forum: MAS-I 10-28-2019, 07:52 PM
Replies: 9
Views: 1,155
Well, I legitimately had a question that I was...

Well, I legitimately had a question that I was worried would get buried in the fall thread, so I started this one. But I've solved it. DayQuil and practice problems aren't the greatest friends.
...
Forum: MAS-I 10-28-2019, 07:39 PM
Replies: 9
Views: 1,155
Forum: MAS-I 10-25-2019, 02:47 PM
Replies: 5
Views: 1,239
Pretty sure it's a race to see who gets their...

Pretty sure it's a race to see who gets their name on the thread. However, if you create it, there is a rule that your inaugural post says only "First."
Forum: MAS-I 10-24-2019, 11:19 AM
Replies: 574
Views: 87,593
Good luck and good speed to everyone!

Good luck and good speed to everyone!
Forum: MAS-I 10-13-2019, 04:36 PM
Replies: 8
Views: 757
Thank you! So do you just record your answer...

Thank you!

So do you just record your answer for each question in the examination booklet then?

And what size envelope? Just a regular letter-sized envelope, or do people bring one of those...
Forum: MAS-I 10-13-2019, 03:07 PM
Replies: 8
Views: 757
This is very naive of me, but I've never brought...

This is very naive of me, but I've never brought an envelope to mail anything to myself, and I've always wondered how that worked. What exactly are you allowed to mail to yourself?
Forum: MAS-I 10-04-2019, 05:44 PM
Replies: 5
Views: 1,239
This isn't a great answer, but 1. I'd...

This isn't a great answer, but

1. I'd suggest something more like 6 months averaging 25 hours a week.

2. Everyone says to read the source materials. I have enjoyed the ASM manual quite a...
Forum: MAS-I 10-04-2019, 05:20 PM
Replies: 574
Views: 87,593
Instead of x-bar, should this be the sum of the...

Instead of x-bar, should this be the sum of the xi?

Maybe I'm misunderstanding what x-bar is for binomial results. If you flipped 10 coins and got 5 heads, and then flipped 10 coins again and...
Forum: MAS-I 09-16-2019, 07:51 PM
Replies: 574
Views: 87,593
Dr. Weishaus, problem 28.25 on pg. 389 is another...

Dr. Weishaus, problem 28.25 on pg. 389 is another where we're asked to find a percentile that lies between tied ordinal statistics. The solution says the 75th percentile is 4, but I'm thinking Tse...
Forum: MAS-I 09-16-2019, 02:27 PM
Replies: 574
Views: 87,593
This seems trivial, but I can't seem to get a...

This seems trivial, but I can't seem to get a handle on it, and it's driving me nuts. "Quantiles" - how on earth do we talk about these with respect to observations in a sample?


Where yj is the...
Forum: MAS-I 09-05-2019, 11:37 AM
Replies: 574
Views: 87,593
You're right, that was paraphrase. It said...

You're right, that was paraphrase. It said "determine x75-hat", which I interpreted as the empirical percentile. I realized after posting this that he had defined x-hat for smoothed percentiles...
Forum: MAS-I 09-03-2019, 01:21 PM
Replies: 574
Views: 87,593
I did this and came up with 12. Tse comes up...

I did this and came up with 12. Tse comes up with 11.625. Are both answers correct? Is mine incorrect?
Forum: MAS-I 09-03-2019, 11:43 AM
Replies: 574
Views: 87,593
Jeez, I don't even know what the normal...

Jeez, I don't even know what the normal distribution rounding rules are for the exam. I looked in the tables, but didn't see a mention of them. Is it just that you round your z-value to the nearest...
Forum: MAS-I 07-25-2019, 11:28 AM
Replies: 574
Views: 87,593
That being said, I'm still interested to know: if...

That being said, I'm still interested to know: if you can generate new random number using u3 = [u2 - f(x1)/cg(x1)]/[1 - f(x1)/cg(x1)] when you've rejected x1, can you not also generate a new one...
Forum: MAS-I 07-24-2019, 07:36 PM
Replies: 574
Views: 87,593
If u2 > f(x1)/cg(x1) and you reject x1, you can...

If u2 > f(x1)/cg(x1) and you reject x1, you can generate a new uniform random number by saying:
u3 = [u2 - f(x1)/cg(x1)]/[1 - f(x1)/cg(x1)].

If u2 ≤ f(x1)/cg(x1) and you accept x1, couldn't you...
Forum: MAS-I 07-24-2019, 01:24 PM
Replies: 574
Views: 87,593
On simulating a standard normal using the...

On simulating a standard normal using the acceptance-rejection method and an exponential with mean 1:

emphasis added

It seems like the "may use" statement is relevant in real life, but might be...
Forum: MAS-I 07-23-2019, 07:10 PM
Replies: 574
Views: 87,593
Yes, if you follow the instructions in Ross or...

Yes, if you follow the instructions in Ross or presumably any other study material, c is set as the maximum value of f(x)/g(x). Though if you don't care about efficiency, you could presumably use...
Forum: MAS-I 07-23-2019, 12:39 PM
Replies: 574
Views: 87,593
(Apologies in advance if my notation is poor.) ...

(Apologies in advance if my notation is poor.)



I'm struggling with this. The area under f(x) divided by the area under c*g(x) is 1/c. Intuitively that feels fine, but that's all I've got. ...
Forum: MAS-I 07-22-2019, 06:51 PM
Replies: 574
Views: 87,593
For the acceptance-rejection method of...

For the acceptance-rejection method of simulation:



I'm struggling with this. The area under f(x) divided by the area under c*g(x) is 1/c. Intuitively that feels fine, but that's all I've...
Forum: MAS-I 07-22-2019, 01:02 PM
Replies: 574
Views: 87,593
Turns out that you're the only one taking it for...

Turns out that you're the only one taking it for the first time this fall, Ace. ;)

I'm aiming for a sitting next spring at the earliest, so my progress probably wouldn't be much of a benchmark. ...
Forum: MAS-I 07-16-2019, 07:04 PM
Replies: 9
Views: 2,156
I don't know why I was thinking about this...

I don't know why I was thinking about this question while studying, but for some reason it popped into my mind.

I thought I heard many years ago that ACAS was generally considered equivalent to...
Showing results 1 to 25 of 300

 

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