Students is Mrs. Kale’s class gathered data on the heights and weights of a sample of students in their class. They found a linear model for the data y=1.24x+12.6y=1.24x+12.6, where xx is the height in inches and yy is the weight in pounds. The actual value of a student 51 inches tall is 75 pounds. What is the approximate value of the residual for a student 51 inches tall

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)

Quickly multiply and simplify polynomials (x – 4) (x^2 – 5x – 6)

Kilgore trout creates a new scale to diagnose depression. however, his scale only assesses one symptom of depression while ignoring others. which of the following is his new scale most likely lacking? a) test-retest reliability b) discriminant validity c) criterion validity d) alternate-forms reliability e) content validity f) none of the above