Question 1 Researchers obtained the following output in an attempt to determine if there are significant difference between variable 1 and Variable 2. The critical value they would use for this testis Mean Variance Observations Pooled Variance Hypothesized Mean Difference dr Stas PITO one-tail Critical one-tall Pict) two-tall Critical two-tail Variable 1 Variable 2 4673,333333 4370 14626.66667 46000 6 30313.33333 0 10 3.017615608 0.006474041 1.812461123 0.012948083 2.228138852 - 2.228 3.0177 01.812 0.0129 Assume researchers are interested in testing whether or not variable 1 has a higher mean than variable 2 and have produced the following Excel output. Enter the critical value they should use for this test, rounded to 3 decimal places. Mean Variance Observations Pooled Variance Hypothesized Mean Difference df Stat P(T