SOLUTION: In a survey of 500 Latin music downloads in a certain year, 250 were regional (Mexican/Tejano), 160 were pop-rock, 80 were tropical (salsa/merengue/cumbia/bachata), and 10 were urb

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: In a survey of 500 Latin music downloads in a certain year, 250 were regional (Mexican/Tejano), 160 were pop-rock, 80 were tropical (salsa/merengue/cumbia/bachata), and 10 were urb      Log On


   



Question 1157196: In a survey of 500 Latin music downloads in a certain year, 250 were regional (Mexican/Tejano), 160 were pop-rock, 80 were tropical (salsa/merengue/cumbia/bachata), and 10 were urban (reggaeton). Calculate the following relative frequencies. (Round your answers to two decimal places.)
(a) a music download was regional?

(b) a music download was either tropical or urban?


(c) a music download was not urban?

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
regional would be 250/500 or 0.50
tropical or urban would be the sum or 80+10=90, probability is 90/500 or 0.18
not urban would be 1- probability (urban)=1-10/500 or 0.98.