Richard Simmons wants to know whether his original weight-loss system (Simmons I) is as effective as his new weight-loss system (Simmons II). His results indicate that people on Simmons I lose an average of 28.5 pounds in six months and people on Simmons II lose an average of 30.1 pounds in six months. What type of statistics should Richard use to see if the Simmons II system is really better
than the Simmons I system?
a. ?inferential
b. ?descriptive
c. ?mean
d. ?mode
ANSWER:
a
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