Jack wants to find out which laundry detergent cleans the best. so, he takes a cotton sheet and cuts it up into equal squares. he stains four squares with chocolate, and four with grape juice. he washes one of each of the squares in each of the 3 detergents. one from each set of squares is washed in water alone. for each wash load, he used: the same amount of water, the same amount of detergent and the same temperature and water.

what is the independent variable? , dependent variable, control, constant, hypothesis?

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.

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Astore ordered 750 candles a total wholesale cost of $7910.20. the soy candles cosy $12.17 each and thespecialty candles cost $9.58each. how many of each were bought?