Please answer test statistic & positive critical value only!

Test the claim that the mean GPA of night students is significantly different than the mean GPA of day students at the 0.2 significance level. The null and alternative hypothesis would be: Ho : PN = PD HO: UN = UD HO :PN = PD HO : UN = UD HO : PN = PD HO : UN = UD H1:PN # PD H1: UN PD H1 :UN # ND H1:PN AD The test is: right-tailed left-tailed two-tailed O The sample consisted of 80 night students, with a sample mean GPA of 2.97 and a standard deviation of 0.05, and 70 day students, with a sample mean GPA of 2.99 and a standard deviation of 0.06. The test statistic is: (to 2 decimals) The positive critical value is: (to 2 decimals)