[NOTE: this is CC'd to EDSTSAT-L]
Stan Brown wrote:
... Now we come to the part I'm having conceptual trouble with: Have
you proven that one gas gives better mileage than the other? If so,
which one is better?
Now obviously if the two are different then one is better, and if
one is
On Sun, 30 Dec 2001 18:07:16 -0500, [EMAIL PROTECTED] (Stan Brown)
wrote:
Rich Ulrich [EMAIL PROTECTED] wrote in sci.stat.edu:
[ ... ]
RUWe should
not overlook the chance to teach our budding statisticians:
*Always* pay attention to the distinction between random trials
or careful
In article [EMAIL PROTECTED], Stan Brown
[EMAIL PROTECTED] writes
I think I've got some sort of mental block on the following point.
Can someone explain this to me, plainly and simply, please?
Let me start with a sample problem, NOT created by me:
[The student is led to enter two sets of
A. G. McDowell [EMAIL PROTECTED] wrote in
sci.stat.edu:
The significance value associated with the one-tailed test will always
be half the significance value associated with the two-tailed test,
For means, yes. Not for proportions, I think. (I wasn't asking about
a proportion in my original
On Sun, 30 Dec 2001, Stan Brown wrote in part:
A. G. McDowell [EMAIL PROTECTED] wrote:
The significance value associated with the one-tailed test will always
be half the significance value associated with the two-tailed test,
For means, yes. Not for proportions, I think.
Oh? Why not?
Hi Stan,
This is sent to both you and edstat.
Have you proven that one gas gives better mileage than the other? If
so, which one is better?
There are two points. The first is that you have not 'proved' anything -
except in the most casual interpretation of 'proof'. What you have done
is
Rich Ulrich [EMAIL PROTECTED] wrote in sci.stat.edu:
[ posted and e-mailed.]
Ditto.
On Sat, 29 Dec 2001 16:46:10 -0500, [EMAIL PROTECTED] (Stan Brown)
wrote:
Now we come to the part I'm having conceptual trouble with: Have
you proven that one gas gives better mileage than the other? If so,
[ posted and e-mailed.]
On Sat, 29 Dec 2001 16:46:10 -0500, [EMAIL PROTECTED] (Stan Brown)
wrote:
[... ]
[The student is led to enter two sets of unpaired figures into
Excel. They represent miles per gallon with gasoline A and gasoline
B. I won't give the actual figures, but here's a
I think I've got some sort of mental block on the following point.
Can someone explain this to me, plainly and simply, please?
Let me start with a sample problem, NOT created by me:
[The student is led to enter two sets of unpaired figures into
Excel. They represent miles per gallon with
