I would compute the proportion from the drive through for each day, and then test if that were 75%. Then, instead of two numbers for each day, you have only one, and that's the one you're interested in.
The test for a proportion being equal to some number should be in any book of stat formulae..... HTH Peter Peter L. Flom, PhD Assistant Director, Statistics and Data Analysis Core Center for Drug Use and HIV Research National Development and Research Institutes 71 W. 23rd St www.peterflom.com New York, NY 10010 (212) 845-4485 (voice) (917) 438-0894 (fax) >>> [EMAIL PROTECTED] 2/24/2004 10:53:02 AM >>> How would you test the following hypothesis: A fast-food restaurant claims that 75% of their revenue is from the "drive-thru". Suppose you have 50 days of receipts from the restaurant. Each days' receipt shows the total revenue and the "drive-thru" revenue for that day. I'm in a quandary as to how one would conduct this test. The two revenues are obviously dependent under the null hyp; thus it's not just a simple test of comparing two means from independent samples.(Even if the samples were independent, I'm not sure how to do it-because of the 75% factor in the hyp. This is a moot point ,though, since the samples are clearly dependent to start with) Thanks for any help. . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . ================================================================= . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
