basic stats question

2001-02-26 Thread James Ankeny
Hello, I have a question regarding basic probability and statistics. If I understand correctly, the definition of independence holds for two events that are subsets of the same sample space. In other cases, we may need to construct a new sample space, such as with the flipping of a coin

Re: basic stats question

2001-02-26 Thread Donald Burrill
Perhaps jthis is too superficial -- no time to think more deeply just now. But I suspect the difference between your two scenarios below is that with exactly 5 computers to deal with (i.e., population size = 5) you are sampling without replacement (which is only sensible, for the background

Re: pizza

2001-02-26 Thread Mike Granaas
On Sat, 24 Feb 2001, Donald Burrill wrote: On Sat, 24 Feb 2001, Mike Granaas wrote: Interesting point. Yes, if the Ss do something other than a random guess the binomial model would be violated. The question then becomes what would they do if they are uncertain? I suspect that they

Re: pizza

2001-02-26 Thread dennis roberts
the original post meant that ... there were multiple tasters ... i had just put 10 as an example thus, in the binomial context ... i was assuming (rightfully or wrongfully) that n=10 ... that is, if we SCORE across the 10 ... we could have scores of 0 to 10 ... in terms of how many got the

two sample t

2001-02-26 Thread dennis roberts
when we do a 2 sample t test ... where we are estimating the population variances ... in the context of comparing means ... the test statistic ... diff in means / standard error of differences ... is not exactly like a t distribution with n1-1 + n2-1 degrees of freedom (without using the term

Re: On inappropriate hypothesis testing. Was: MIT Sexism statistical bunk

2001-02-26 Thread Rich Ulrich
- I want to comment a little more thoroughly about the lines I cited: what Garson said about inference, and his citation of Olkey. On Thu, 22 Feb 2001 18:21:41 -0500, Rich Ulrich [EMAIL PROTECTED] wrote: [ snip, previous discussion ] me I think that Garson is wrong, and the last 40 years