Use data set 5.1 (set of 24 observations, test scores)

I'm teaching an "introduction to sociology" class and want to know if it is performing differently from my "introduction to sociology" classes in the past, whose final exam scores had a 75pt average. A one-sample t-test is used to determine whether this sample is representative of a normal population (i.e., whether the students' mean test score is statistically significantly different from 75).

use "C: \\Users\\YH789961\\Desktop\\5. 1.dta" summ score Variable | Obs Mean Std. dev. Min Max score 23 82. 6087 12. 44895 48 98 10 ttest score==75 11 12 One-sample t test 13 14 Variable | Obs Mean Std. err. Std. dev. [95% conf. interval] 15 16 score 23 82. 6087 2.595785 12. 44895 77.22537 87.99202 17 18 mean = mean(score) : = 2.9312 19 HO: mean = 75 Degrees of freedom = 22 20 21 Ha: mean 75 22 Pr (T |t|) = 0.0077 Pr(T > t) = 0.0039 23 24 ttest score==75, level(99) 25 26 One-sample t test 27 28 Variable | Obs Mean Std. err. Std. dev. [99% conf. interval] 29 30 score 23 82. 6087 2.595785 12. 44895 75 . 29181 89.92558 31 32 mean = mean (score) : = 2.9312 33 HO: mean = 75 Degrees of freedom = 22 34 35 Ha: mean 75 36 Pr(T |t|) = 0.0077 Pr(T > t) = 0.0039 37