a researcher creates two random samples, each with sample size of 12. he does not find a statically significant difference between the two groups. which of the following statements is correct? select all that apply a) since random samples were used, the conclusion b) the sample size does not impact results of statistical significance. c) since the sample size is small , the conclusion is likely to be untrue. d) since the sample size of each group is greater than 10, the conclusion is likely to be true