What Does a Psychologist Usually Mean When She Says a Specific

Multiple Choice

What does a psychologist usually mean when she says a specific experimental result is 'significant'?

A) The result reflects a large difference between the mean scores of one participant group and the mean scores of another.
B) The result is important in a practical sense.
C) The result will allow psychologists to support one theory over alternative theories.
D) The result is unlikely to have occurred solely because of chance.