Do a twosampletest for equality of means assuming unequal variances. Calculate the ,cwalue using Excel. [a-1) Comparison of GPA for randomly chosen collegejuniors and seniors: :31 - 4.5, 5.1 - .20, n1 - 15, :32 - 4.9, 52 - .30, Hz -15, (1-025, lefttailed test. [Negative values should be indicated by a minus sign. Round down your c\": answer to the nearest whole number and other answers 1.0 4 decimal places. Do not use "quick" rules for degrees of freedom.) d.f. tcalculated pualue tcritical (b-1) Comparison of average commute miles for randomly chosen students at two community colleges: 1 = 23, $1 = 5, /1 = 22, 2 = 32, $2 = 7, n2 = 19, a = .05, two-tailed test. (Negative values should be indicated by a minus sign. Round down your d.f. answer to the nearest whole number and other answers to 4 decimal places. Do not use "quick" rules for degrees of freedom.) d. f. t-calculated p-value t-critical +/ -Inc-1) Comparison of credits at time of graduation for randomly chosen accounting and economics students: 5"] =149, s] = 2.8, n1 =12, :3? =146, 52 = 2.7\