An instructor at a large university wanted to test the difference in academic performance on the final exam between two groups using different learning options. The instructor gave students the option...

An instructor at a large university wanted to test the difference in academic performance on the final exam between two groups using different learning options. The instructor gave students the option to purchase an interactive program that allows them to answer questions during class and receive credit for participating. Alternatively, students could work an extra
problem during weekly homework assignments. The instructor randomly selected 30 students for the group that was provided the interactive tool and 30 students for the group that was asked to work the extra problem. Below are the statistics for the final exam score for each group.
Interactive tool group
n=30   x= 82.2   s=11.6
Extra problem group
n=30   x=68.8   s=10.5
Determine the 98% confidence interval for the mean difference in final exam scores between the interactive tool group and the extra problem group. MAKE SURE YOU DO ALL 4 STEPS > State, plan, do and conclude!