Following the Analysis of a Well-Designed,completely Randomized Experiment,it Was Reported

question 7

Multiple Choice

Following the analysis of a well-designed,completely randomized experiment,it was reported that the observed effect was statistically significant.Which of the following statements best explains the meaning of the phrase "statistically significant"?

• A)The observed result made sense to the experimenter since it was what was hoped would happen.
• B)The observed effect happened because the experiment was properly designed and carried out without bias.
• C)The experimenter carefully employed the basic principles of experimental design in conducting the study.
• D)The laws of probability say that this observed result would be expected to happen by chance.
• E)The observed effect was sufficiently large so that it would rarely occur simply by chance.