Re: need help with finding probability
From: Eric Bohlman (ebohlman_at_omsdev.com)
Date: 03/18/05
- Previous message: googlegroups_at_mwpenderis.mailshell.com: "Re: combinatorial question"
- In reply to: shanky: "need help with finding probability"
- Messages sorted by: [ date ] [ thread ]
Date: 18 Mar 2005 18:27:14 GMT
"shanky" <shankardasm@gmail.com> wrote in news:1111093507.292151.232300
@o13g2000cwo.googlegroups.com:
> The problem i have is there are two rules to pass a chemical batch:
>
>
> 1) take 6 samples and check whether they are within limits. if yes
> then pass the batch else go to level 2.
>
>
> 2) take 6 more samples and find mean of the 12 and check whether it is
>
> within limits, also check whether each reading is within 0.9LSL and
> 1.1USL. IF yes then pass the batch
> LSL=LOWER SPECIFICATION LIMIT
> USL=UPPER SPECIFICATION LIMIT.
>
>
> ALl the samples are generated using random numbers for a normal
> distribution.
>
>
> I have different means and standard deviations for which i have to
> generate the readings. I did write the macro for them and got the
> results.
>
>
> MY QUESTION:
> How to find or estimate to within 1% accuracy the probability that a
> batch with mean and std deviation will pass the given specifications of
> LSL and USL.
Search for "tolerance intervals."
- Previous message: googlegroups_at_mwpenderis.mailshell.com: "Re: combinatorial question"
- In reply to: shanky: "need help with finding probability"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
