Marissa and Andrea went shopping for new clothes together. Marissa chose 2 shirts and 1 pair of pants, which cost $45. Andrea chose 3 shirts and 2 pair of pants, which cost $80. All the shirts
Marissa and Andrea chose cost the same amount and all the pants they chose cost the same
amount. Which of the following statements is true?

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Issof claims that the scale factor is 1/2. which statement about his claim is correct

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.