To compare the effectiveness of two detergents at removing common stains (such as mustard, grass, and blood), researchers prepared stained clothing samples. Each sample was cut in half and each of the two pieces was assigned, using a random mechanism, to one of the two detergents. After washing, the two halves were compared with each other. Which term best describes the experimental design used in this study

The correlation coefficient between the number of students and marks obtained in end semester exam. (13 marks) give the statistical meaning of the relationship between the number of students and marks b. obtained in end semester exam. (3 marks) draw the number of students and marks obtained in end semester exam scatter diagram c. (4 marks) check list write your name and id corectly write the question number properly use your own calculator. show all the steps to solve the problems. use the correct formula. answer in provided time. don't use your mobile for any purpose. write your answer up to two decimal places