Re: Problem on Confidence Interval

Satish wrote:
Hi All,

Request you to provide me answer to the following question relevant to
Confidence Interval.

For sigma (Standard deviation) = 15, what sample size is required to
specify 99% confidence interval of ±5 units for mean?

Please solve this problem.

I guess this is a good point to explain the rules about doing homework on sci.stat.math. Basically, we're not here to do your homework for you: you're assigned it so that you will do it yourself, and learn from the experience.

On the other hand, if you can demonstrate that you've made a serious attempt at it, then we'll give hints, and make suggestions. I think the ideal case is where a student says "I did x and y, got to this point, but can't work out what to do next. I think I should try z, but can't see how/why." It helps us focus on what the student doesn't understand, which helps them learn too.

Bob

--
Bob O'Hara
Department of Mathematics and Statistics
P.O. Box 68 (Gustaf Hällströmin katu 2b)
FIN-00014 University of Helsinki
Finland

Telephone: +358-9-191 51479
Mobile: +358 50 599 0540
Fax: +358-9-191 51400
WWW: http://www.RNI.Helsinki.FI/~boh/
Journal of Negative Results - EEB: www.jnr-eeb.org
.

Relevant Pages

  • Re: PROGRAMMING HOMEWORK HELP!
    ... >>Homework is how a student proves to the school that they understand the ... If you do their homework for them, ... > himself if he feels doing so would merit a weak grade. ... When I became an instructor, ...
    (comp.programming)
  • Re: Top N Records minus lower scores
    ... FROM Table1 as Temp ... I may give out 19 quizes, but I will only count 15 of those. ... In other words, the student will take all the quizes and then the lowest 4 will drop, so even though they will take 19 quizes, only 15 count toward their final grade. ... The homeworks will work much the same way, however, the 19th homework is mandatory. ...
    (microsoft.public.access.queries)
  • Re: PROGRAMMING HOMEWORK HELP!
    ... If you do their homework for them, ... > are proving that you understand the concepts that have been taught. ... Homework should be a set of exercises that teach the student how to ... It is especially hard to pace a programming course, ...
    (comp.programming)
  • Re: Question re transmission speeds
    ... we're not inclined to volunteer answers to 'Homework ... The main problem with 'Homework Questions' is that the 'student' is ... you can refer him to that link. ... Thanks John, I suspected the 'G' might represent Google, actually! ...
    (uk.comp.homebuilt)
  • Re: frustrated with my med team and hubby and I am rebelling
    ... homework can be a pain in the butt. ... All my life I have been an A+ student, ... drop my medical team and do what I want. ...
    (alt.support.stop-smoking)