Dr. Kwan's hypothesizes that allowing factory employees to listen to music while working will improve productivity. After conducting the experiment,
Dr. Kwan finds that the group of participants who were allowed to listen to music was more productive than the group who did not, but this difference was not statistically significant. What should Dr. Kwan conclude about the difference between the two groups?
A) It supports his hypothesis.
B) He is likely to find the same effect if he replicated the study.
C) There is an unacceptable chance that the difference is due to random chance.
D) The experiment was biased.
Answer: C
Rationale: Statistical significance implies that the means of the groups are further apart than you would expect them to be by random chance alone. If a result is not statistically significant, then the difference between the groups is too likely to be due to random chance to support the hypothesis. This means that the results may not be able to be replicated.
You might also like to view...
Your textbook notes a research study that was conducted using participants who worked in the printing and graphics industry. It found that greater company growth over a four-year period was positive correlated with higher levels of _________ intelligence
a. analytical b. creative c. practical d. conversational
The most accurate description of short-term memory's capacity is probably to say that it can hold ________. The most accurate description of short-term memory's capacity is probably to say that it can hold ________