Please help me revise my way of answering this question...I couldn't find any ways on how to revise my answer ...I already have my answer on question number 2:

Question: In Estrella Village Elementary School, do the girls perform better in Math than the boys during the Second Grading? Hint: Use actual grades in Math for comparison.

I gave my computations but my teacher, said it needs revision and I don't know how..please help me solve this. It's about STATISTICAL INFERENCE FOR TWO SAMPLES

This is my answer on question number 2:

2. In Estrella Village Elementary School, do the girls perform better in Math than the boys during the Second Grading? (Hint: Use actual grades in Math for the comparison) #of Students BOYS GIRLS 1 BE 85 n1 =4 12 = 7 79 BA 5 = 81.5 7 = 83.43 4 79 5 31 =3 91 = 1.9024 81 7 Total 326 584 Average 81.5 33.43 Standard 3.00 1.90 Deviation and Grading 1. Ho: 1 = Wz Hi: Hi: Wipe (two-tailed) 2. a = 0.05 3. T with my + ny- 2 = 9 degrees of freedom Critical value for T at 0.05 level (two-tailed) and v=9 dfare -2.262 and +2.62. 4. Computations: n, +n - 2 = (4-1)(3) + (7-1)(1.9) 4+7-2 = (3)3+ (7-1)(1.9) =27+ 21.66 - 9 = 5.4066666667 = square root of 5.4066666667 = 2.3252240036 X - I. t = = 81.5 - 83.43 divided by 2.325 saware roar s/ the sum of /4 + 1/7 =81.5- 83.43 is equal to -1.93 = 0.25 +0.1429 = 0.3929 to =-1.93 + 1.456 =-1.325 0.6263385666 x 2.325 = 1.4562371673 Conclusion: Since to equal to -1.325, accept the null hypothesis that in Estrella Village ES, the boys and girls have the equal performance in their Math during the 2"" grading.Data: Performance of Grade VI pupils in two elementary schools in Mama North District (Cervantes, 2007) RESP GRADING SCHOOL SEX MATH ENGLISH AVERAGE 20 90 90_0 85 86.0 81 81.0 78 79_0 79 77 78.0 77 76 76.5 87 88.0 86 36.5 85 85.5 84 84.5 83 83.5 82 82.5 81 81.5 80.5 80.0 78 79_0 76 76.0 85 34.5 82 81.0 79 79_0 79 78.5 85 85.0 84 84.0 83 83_0 83 82.5 83 82.0 81 80.5 80 30_0 91 91.5 28 89_0 35 85.0 81 81.5 79 79_0 79 79_0 78 78.0 91 90 5 88.5 87 88.0 84 34.0 84 83.5 82 82.0 81 81.5 80 80.5 79 79 5 77 77.5 85 85.0 19 82.520 79 79 79_0 21 79 79 79_0 22 36 86.0 86 85.5 24 84 84.0 25 83.5 26 81 82.0 27 80 80.5 28 80 80.5 Coding: SCHOOL: 1 -Bagong Sicat E.S.; 2 -Estrella Village E.S. // SEX: 1 -boy; 2-girl