4. A researcher computer an inferential statistic to test the difference between mean scores for an experimental group and a control group. The probability of the obtained statistical value for the totest is . 025 , which is less than the alpha level of significance ( PS. 05 ) . The researcher should ?/ 67 definite . A reduce the alpha level of significance to . 025 to forma conclusion AN| B. have of these choices bit shiney Inshoalsbar wit 50 C. neither accept nor reject the null hypothesis of no difference because the probability value of , 025 is significantlydifferentthan. 056 D. accept the null hypothesis of no difference between the experimental and control groups because the probability is so small; this the IV had no effect E. reject the null hypothesis of no difference between the experimental and control groups because the probability is sosmall; thus the IV had a reliable effect on the dependent variable