Students in the first semester French course are split into two groups, those who had completed a previous language course and those who did not. Samples of size 40 were selected from each group and their score on the first French exam recorded. The summary statistics are

Previous course: n₁ = 40 x = 71.2 s₁ = 10.3

No previous course: n₂ = 40 y = 64.9 s₂ = 9.92

Calculate a 95 % confidence interval for the difference in mean test scores. a previous language course.

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The Answer of Students in the first semester French course are split into two groups, those who had completed a previous language course and those who did not. Samples of size 40 were selected from each group and their score on the first French exam recorded. The summary statistics are Previous course: n₁ = 40 x = 71.2 s₁ = 10.3 No previous course: n₂ = 40 y = 64.9 s₂ = 9.92 Calculate a 95 % confidence interval for the difference in mean test scores. a previous language course.

Students in the First Semester French Course Are Split into Two