students in a statistics class take a random sample of 100 students at their college and record how many units each student is enrolled in. the students compute a 90% confidence interval for the mean number of units for students at their college and get (11.93, 12.47).

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

25 points fast click to review the online content. then answer the questions(s) below, using complete sentences. scroll down to view additional questions. online content: site 1. take the study skills assessment. identify one area in which you could improve. then describe what steps you will take to improve in that area.

Onstruct the grouped frequency table for the following data. 1, 1, 1, 1, 2, 2, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9