A bag contains 15 beads. Six are black and the rest white. Two beads are
drawn at random, without replacement
Find the probability of getting 2 black
beads.

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.

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

How do you write y-10=2 (x-8) in standard form