21. The graph shows the distance Julie walls ousty time. Does she walk at a constant or variable
speed? How fast is Julie walking?
3
s
Distance (mi)
4 3 2
1
2 3
Time (h)
a. vanable speed, 8 mih
b. constant speed: 4 mvh
c. constant speed: 2 mvh
d. constant speed: 8 muh

What’s the answer answer to this question

Find the roots of the equation below. x^2 - 6 + 9 = 0

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.