Kay and Jane’t conducted surveys to determine how many times each week people in their area work out at the gym. • Kay surveyed 20 people who looked younger than 30 years of age at the mall on a Saturday afternoon. The number of gym workouts reported per week were: 6, 4, 0, 0, 1, 2, 1, 3, 0, 5, 0, 1, 1, 0, 1, 3, 2, 2, 1, 2 • Jane’t surveyed 20 people who were exiting the 24/7 Fitness Center on a Friday night. The number of gym workouts reported per week were: 1, 2, 3, 4, 6, 7, 10, 1, 2, 4, 5, 7, 1, 2, 3, 4, 5, 3, 4, 2

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.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Look at this system of equations. -3x + 3y = 12 y = x + 4 the solution set of this system is best explained by which of these statements? a) the graphs of the equations are the same line because the equations have the same slope and the same y-intercept. the system has infinitely many solutions. b) the graphs of the equations are parallel lines because they have the same slope but different y-intercepts. the system has no solution. c) the graphs of the equations are lines that intersect at one point because the equations have the same slope but different y-intercepts. the system has exactly one solution. d) the graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. the system has exactly one solution.