6. Factors that influence a hypothesis test with the t statistic Suppose you conduct a hypothesis test about a population mean when the standard deviation is unknown by calculating at statistic and determining whether to reject the null hypothesis. Assume that your t statistic is a positive value and that you will reject the null hypothesis when t is very large. For each of the potential changes to the components of your study design or the results listed below, determine the change to the t statistic, and then select "Increases," "Decreases," or "Stays the same" from the dropdown menu in the right-hand column. Change in Study Design or Results An increase in the obtained difference (M-p) A switch from using a one-tailed test to a two-tailed test A decrease in the significance level (such as using a .01 instead of a = .05) An increase in the sample size (n) The t statistic Grade It Now Save & Continue Continue without saving For each of the potential changes to the components of your study design or the ref select "Increases," "Decreases," or "Stays the same" from the dropdown menu in th Decreases Increases Stays the same determine the change to the t statistic, and then hn. Change in Study Design or Results An increase in the obtained difference (M-) A switch from using a one-tailed test to a two-tailed test A decrease in the significance level (such as using a = .01 instead of a = .05) An increase in the sample size (n) Grade It Now Save & Continue Continue without saving