8. Describe each of the following correlation coefficients using the terms strong, moderate, or weak and negative, or positive.
a. r = 0.21
c. r = 0.55
e. r = 0.99
b. r = -0.87
d. r = -0.099
f. r = -0.49

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?