A study performed by a Columbia University professor (described in Report on Business, August 1991) counted the number of times per minute professors from three different departments said “uh” or “ah”...

A study performed by a Columbia University professor (described in Report on Business, August 1991) counted the number of times per minute professors from three different departments said “uh” or “ah” during lectures to fill gaps between words. The data derived from observing 100 minutes from each of the three departments were recorded. If we assume that the more frequent use of “uh” and “ah” results in more boring lectures, can we conclude that some departments’ professors are more boring than others?