The first quartile of the 2, 12, 8, 4, 18, 30 is: Select one: O a. 5.25 O b. 9.5 O c 3.5 O d. 1.75 on 10 In a study the regression equation to determine the relation between number of meals (x) and hemoglobin level () was y = -5.8 +1.2 x. If the number of meals increased by 2 what is the expected change for the hemoglobin level? to red d out of a question Select one: O a. Decreased by 2.4 O b. Increased by 11.6 O . Decreased by 11.6 O d. Increased by 2.4 stion 9 If the correlation coefficient between two yet variables x and y is -0.92, Then: vered ked out of Select one: O a. There is a moderate positive relationship between x and y. lag question O b. There is a strong negative linear relationship between x and y. O c. There is a weak indirect linear relationship between x and y. O d. There is on linear relationship between x and y.