When TV advertisements report that "2 out of 3 dentists surveyed indicated they would recommend Brand X toothpaste to their patients," an informed consumer may question the conclusion because
A)the sample was only 5 dentists.
B)the sample of dentists is clearly explained.
C)the advertisement does not include the total number of dentists surveyed.
D)the conclusion is not illustrated with a graph.

Question

Quizplus · Accepted Answer

Without knowing the total number of dentists surveyed, it is difficult to determine how representative the sample of dentists is and whether the conclusion is truly reliable. It is possible that only a small number of dentists were surveyed, which could impact the validity of the conclusion.

When TV Advertisements Report That "2 Out of 3 Dentists