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

Question

Quizplus · Accepted Answer

Without knowing the total number of dentists surveyed, it is impossible to determine the accuracy and representativeness of the sample. Therefore, the conclusion cannot be fully trusted. The other options are not relevant to the main issue of sample size and representativeness.

When TV Advertisements Report "2 Out of 3 Dentists Surveyed