I don't see this. The claim in the original problem was that the true value of revenue from drive thru is 75%. The the claim to be nullified is that revenue from the drive through is 75% (.75).
While I see it as a somewhat odd that this claim was a point value rather than directional it is a point value claim and that is what needs to be tested. Michael **************************************************** Michael Granaas [EMAIL PROTECTED] Assoc. Prof. Phone: 605 677 5295 Dept. of Psychology FAX: 605 677 3195 University of South Dakota 414 E. Clark St. Vermillion, SD 57069 ***************************************************** ----- Original Message ----- From: Phillip Good <[EMAIL PROTECTED]> Date: Tuesday, February 24, 2004 11:05 am Subject: [edstat] null means null > Null means null. A terifying habit is to state in error that the > primary hypothesis is null when it is not. For example: > > > Dennis Roberts <[EMAIL PROTECTED]> wrote: > > "I would say the null is .75 ..." > > > What he meant was that the primary hypothesis was that drive in > percent =0.75. This distinction is essential when we come to > choose among methods of testing. Hypotheses must always be > converted to null form before permutation methods are employed. > > One also ought take in consideration the alternate hypotheses > before making a recommendation as to the method and statistic to > employ. Are they one-sided or two sided? Ordered or unordered? > Is the loss function first-order, second-order, mini-max, or > something else? > > Phillip Good > > author, Common Errors in Statistics and How to Avoid Them. > > > > > Phillip Good > http.ms//www.statistician.usa > "Never trust anything that can think for itself if you can't see > where it keeps its brain." JKR > > > --------------------------------- > Do you Yahoo!? > Yahoo! Mail SpamGuard - Read only the mail you want. . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
