Which statement is true about correlation: the correlation between two variables depends on their covariance and on the variance of each of the variables. the pearson correlation coefficient is based on the ranks of the data points, like the wilcoxon test. a correlation of -1 means that there is no linear relationship between the two variables. the spearman correlation coefficient requires x and y to be normally distributed.

Choco pies are cookies made from chocolate (c), sugar (s), and flour (f). chocolate costs $5 per pound, sugar costs $3 per pound, and flour costs $2 per pound. you spend $50 on 18 pounds of food and buy twice as much flour as sugar. calvin wants to invest $12,000 in deposits. for tax purposes, he wants his total interest to be $600. he wants to put $1000 more in a 2-year deposit than in a 1-year deposit and invest the rest in a 3-year deposit. how much money should he invest in each deposit?