70. The president of the company that produces Glabrous Shampoo argues against
removing the ingredient HR2 from the shampoo even though a scientific study claims
that prolonged use of HR2 can contribute to hair loss. Three reasons are cited as the
basis for this decision. First, it is argued that since the scientific study involved only 500
subjects, it can be disregarded. Second, none of Glabrous customers have complained
of problems during the past year. And, finally, Glabrous competitors use more HR2 per
bottle than Glabrous. The presidents decision is problematic in several respects.
To begin with, the fact that the scientific study on HR2 involved only 500 subjects
is insufficient grounds to dismiss the results of that study. If the subjects for the study
were randomly chosen and represent a diverse cross section of the population of
shampoo users, the results will be reliable regardless of the number of participants.
Next, the scientific study determined that prolonged use could contribute to hair
loss. While prolonged use was not defined in the memorandum, the fact that none of
Glabrous customers have complained of problems during the past year is not a reliable
reason to believe that problems will not arise in the future.
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