Since 1.96 has been used so frequently in books and literature,
sometimes I forget that the z-statistic can be more precise using
invnormal(.975). Thanks for the reminder, Maarten.
Tom Weichle
Math Statistician
Center for Management of Complex Chronic Care (CMC3)
Hines VA Hospital, Bldg 1, C202
708-202-8387 ext. 24261
Thomas.Weichle@va.gov
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