Immediately after posting the message "z test using Excel" below yesterday I began receiving e-mails the ISP's anti-virus kicked out. One comes through disguised as a message from Microsoft with an .exe attachment. I have not opened any attachments in e-mails from senders I do not know. So to those who sent attachments, thank you but I am afraid to open them. I regret ever having posted my e-mail address but thank all who tried to 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/ . =================================================================
