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-   -   Homework1 Q4 and Q5 - Please show workings (http://book.caltech.edu/bookforum/showthread.php?t=4442)

11lara11 10-10-2013 05:56 AM
Homework1 Q4 and Q5 - Please show workings
 
I have attempted Q4 using the following:
The epsilon here is close to 0.55 becasue v=0 and u=0.55. The N=10.

P[|v-u|>0.55] < 2e^-2(0.55^2)10
................... < 0.00471

but the solution options don't come anywhere close to this. What am I doing wrong? I think I am making a similar mistake in Q5 becasue I get 4.715 for that becasue it is simply the solution above *1000 becasue M=1000.

yaser 10-10-2013 11:49 AM
Re: Homework1 Q4 and Q5 - Please show workings
 
Quote:
Originally Posted by 11lara11 (Post 11561)
I have attempted Q4 using the following:
The epsilon here is close to 0.55 becasue v=0 and u=0.55. The N=10.

P[|v-u|>0.55] < 2e^-2(0.55^2)10
................... < 0.00471

but the solution options don't come anywhere close to this. What am I doing wrong? I think I am making a similar mistake in Q5 becasue I get 4.715 for that becasue it is simply the solution above *1000 becasue M=1000.
The course is currently is session at edX, and there are active discussions in their forum there, so you may want to take a look.

iamds 06-09-2015 05:40 AM
Re: Homework1 Q4 and Q5 - Please show workings
 
I am also having this problem in the question , please help whats been done wrong in this .
Thank you :confused:u

yaser 06-19-2015 01:31 AM
Re: Homework1 Q4 and Q5 - Please show workings
 
The problems ask for the probability, not a bound (Hoeffding or otherwise) on the probability. Try using independence to calculate the probability exactly. If you get Problem 4 right, it is fairly straightforward to get Problem 5, too using simple rules of combining probabilities of events.


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