To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the course. the results are given below. student exam score before course (1) exam score after course (2) 1 530 670 2 690 770 3 910 1,000 4 700 710 5 450 550 6 820 870 7 820 770 8 630 610 what type of test should be used?

Find the area of a square with a side length of 1/4 in.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000