two-tailed right-tailed left-tailed O O The sample consisted of 60 night students, with a sample mean GPA of 3.01 and a standard deviation of 0.05, and 80 day students, with a sample mean GPA of 2.99 and a standard deviation of 0.07. 1 - X2 The test statistic's value is ( $1 ) 2 ( $2 ) + n1 12 =(3.01 - 2.99)/sqrt((0.05)^2/ (60) + (0.07)^2/ (80)) = 1.9714562323606. df = 137.71 What is the test statistic for this sample? independent samples t-test, df = 60 - 2 O paired samples t-test, df = 0 independent samples t-test, df = 137.71 Oz-test The p-value is (if you need df, use the given df above): Use Technology