Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bob bundy
2012-10-04 04:21:49

hi cassrl

Welcome to the forum.

smile

I see you have posted several questions that involve the normal distribution.  I have just written out some background on this for another poster and he was able to get the right answer.

You might find it helpful to view his post:

http://www.mathisfunforum.com/viewtopic.php?id=18183

The help for Q3 starts at post number 17.

Bob

cassrl
2012-10-03 23:40:59

Mean proportion of individuals is p=0.30, sample size is 25 from this population, what fraction will have a sample porportion of 0.20 or lower?

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