ꞮɴᴇQᴜᴀʟɪᴛɪᴇꜱ, ᴡɪʟʟ ᴍᴀʀᴋ ʙʀᴀɪɴʟɪᴇꜱᴛ ɪꜰ ᴄᴏʀʀᴇᴄᴛ

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

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.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?