Dennis Roberts wrote:
this is pure speculation ... i have yet to hear of any convincing case
where the variance is known but, the mean is not
What about that other application used so prominently in texts of
business statistics, testing for a proportion?
Art Kendall wrote:
(putting below the previous quotes for readability)
Gus Gassmann wrote:
Dennis Roberts wrote:
this is pure speculation ... i have yet to hear of any convincing case
where the variance is known but, the mean is not
What about that other application used so
Rich Ulrich wrote:
On Thu, 29 Nov 2001 15:48:48 +0300, Ludovic Duponchel
[EMAIL PROTECTED] wrote:
If x values have a normal distribution, is there a normal distribution
for x^2 ?
If z is standard normal [ that is, mean 0, variance 1.0 ]
then z^2 is chi squared with 1 degree of
Stan Brown wrote:
On a quiz, I set the following problem to my statistics class:
The manufacturer of a patent medicine claims that it is 90%
effective(*) in relieving an allergy for a period of 8 hours. In a
sample of 200 people who had the allergy, the medicine provided
relief for 170
Ronny Richardson wrote:
As I understand it, the Central Limit Theorem (CLT) guarantees that the
distribution of sample means is normally distributed regardless of the
distribution of the underlying data as long as the sample size is large
enough and the population standard deviation is
.
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gus gassmann ([EMAIL PROTECTED])
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If the distribution is nice, samples of size 10 may have reasonably
well-behaved sample means. On the other hand, if the population is
sufficiently awful, 200 points may not be enough. It just depends.
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gus gassmann ([EMAIL PROTECTED])
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.
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gus gassmann ([EMAIL PROTECTED])
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gus gassmann ([EMAIL PROTECTED])
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the three dimensions are collinear.
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gus gassmann ([EMAIL PROTECTED])
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dennis roberts wrote:
here is a contest question: best answer wins something ... what? i have no idea
what would be a good VERBAL description of the bivariate normal
distribution ... as the population rho between X and Y goes from 0 to 1?
(and, in this description, indicate in particular
William Chambers wrote:
Gus,
You are making a defense of studying distributions as they are thrown at us
by nature/circumstances, This seem the way to go to social scientists
because we tend to believe that our causes are embedded in all sorts of
complex interactions and can not be
Mike Wogan wrote:
On Tue, 11 Jan 2000, Glenn Gee wrote:
I have a question in regards to which test statistic to use. Example:
my problem is a test of glue "A" vs glue "B". I have a test that just
determines if glue "A" remains stuck to the surface or not. The test
does not have
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