If 20% of all manually filed returns contain errors, and 0. 05% of all electronically filed returns contain errors, how much more likely is a manual filer to make an error than an electronic filer? a. 40,000 times more likely b. 4,000 times more likely c. 400 times more likely d. 40 times more likely Please select the best answer from the choices provided A B C D.

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

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.

Why is studying fractions important