Perform a two-tailed hypothesis test on both the intrinsic and the extrinsic variable's data, using a .05 significance level. Begin by creating a null and an alternate statement. Use Microsoft Excel to process your data. Copy and paste the results of the output to your report in Microsoft Word. Identify the significance level, the test statistic and the critical value. State whether you are rejecting or failing to reject the null hypothesis statement. In a separate paragraph, provide some information on when to use a t-test and when to use a z-test and why. Also, provide some information about why samples are used instead of populations. I need help with this part of the assignment. My Intrinsic mean 5.268, mode 6.2 and median 5.5. standard deviations (SD)1.036 SEM 0.207 Total N. 25. My extrinsic mean 5.412, mode 5.5, median 5.5. standard deviations (SD)1.017 SEM 0.203 Total N 25. I need this ASAP. I need to know how to calculate the values. What does (SEM) means.