Question

two teachers' are teaching a statistics course and they want to compare their student’s scores on the final exam. How might they use a T-test to compare exam scores?

Answer 1

Here we have to collect statistics score data (say X) of all students from teacher A and then select another statistics score data (say Y) of all students from teacher B who are teaching statistics course.

Since we are collecting sample data from both teachers (A and B) independently, we have to use two independent sample t test to compare the sample means from both data sets (X and Y)

To compare these sample means, we have to set up the null and alternate hypotheses as

: population mean scores of all students from teacher A and teacher B are equal ()

: population mean scores of all students from teacher A and teacher B are not equal ()