In formulating hypotheses for a statistical test of significance, the null hypothesisis oftenA)A statement of "no effect" or "no difference." B)The probability of observing the data you actually...

In formulating hypotheses for a statistical test of significance, the null hypothesisis oftenA)A statement of "no effect" or "no difference."

B)The probability of observing the data you actually obtained.C)A statement that the data are all 0.D)0.05.