The addition of bran to the diet has been reported to benefit patients 
with diverticulosis. Among the consequences of administering bran that 
requires testing is the transit time through the alimentary canal. 

A clinician wonders whether transit time would be shorter if bran is 
given in the same dosage in three meals during the day (treatment A) 
or in one meal (treatment B). A random sample of patients with disease 
of comparable severity and aged 20-44 is chosen and the two treatments 
administered on two successive occasions, the order of the treatments 
also being determined from the table of random numbers.  The data are 
transit times in minutes.