Comments on: Hypothesis Testing: The Basics

By: Jai

Jai — Mon, 25 Oct 2010 15:05:56 +0000

alternative hypothesis is never proved
only null hypothesis is accepted or rejected because alternative hpyothesis is based upon null hypothesis

By: fdfgdf@ggg.com

fdfgdf@ggg.com — Thu, 03 Jun 2010 13:53:10 +0000

very stupid

By: charix

charix — Thu, 14 Jan 2010 22:11:46 +0000

tnx..

By: Bill Smith

Bill Smith — Mon, 07 Dec 2009 17:08:04 +0000

Jesse, thank you for writing this series of articles on statistics.

I understand that small z-scores are better than big ones, but where is the dividing line?

By: Traveller_Adventure

Traveller_Adventure — Sun, 02 Aug 2009 06:01:31 +0000

What a useful post here. Very informative for me..TQ friends...

Cheers,
Blog Review

By: Jesse Farmer

Jesse Farmer — Thu, 04 Jun 2009 20:29:04 +0000

The answer to what?

By: kayla

kayla — Thu, 04 Jun 2009 20:26:17 +0000

i would like for this page to tell me the answer not give me examples. i need an answer not stupid examples.please thank you

By: Jesse Farmer

Jesse Farmer — Wed, 22 Apr 2009 23:37:06 +0000

You're right, I equivocated in my use of “p”. At first I use it to mean the value of p under the null hypothesis, H_0: p = 0.50, but then use it to mean the measured value elsewhere.

I'll fix it.

By: Charles

Charles — Wed, 22 Apr 2009 23:17:20 +0000

I think that the "p" in the denominator for the "z score" should be the hypothesized value, in this case 0.50. You table uses calculated values to find z.

This text is from the referenced web site. (McClave and Sincich also define the formula that way.)
"Analyze Sample Data
Using sample data, find the test statistic and its associated P-Value.
• Standard deviation. Compute the standard deviation (σ) of the sampling distribution.
σ = sqrt[ P * ( 1 - P ) / n ]
where P is the hypothesized value of population proportion in the null hypothesis, and n is the sample size."

By: Cindy P Dennis

Cindy P Dennis — Wed, 04 Feb 2009 06:38:04 +0000

Excellent, entertaining, useful reading, Thanks !!