Please answer

We use p value and 95%CI to determine the statistical significance of the results from t test (One Sample, Independent Samples & Paired Samples). Results are said to have statistical significance if: Op= >.05 and 95% CI for mean difference includes zero. Op = <.05 and ci for mean difference includes zero. op="">.05 and 95% CI for mean difference does not include zero. Op = <.05 and ci for mean difference does not include zero.it is important that we rule out three possible explanations before can conclude the observed effect between intervention control group at end of an experimental study only due to independent variable or intervention. please choose one option has all correct should be rules final conclusion random chance error confounding. systematic error. bias o confounding>