there are 84 species of animals in the metropolitan zoo 5/12 of the species are from north north Africa 1/5 of the species are from Africa the remaining species are from north America how many species are from North America

For each proportion find the unknown number x 1/5/8=×/15

What is the number 321,000,000 in scientific notation? also what is the number? ?

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.