1) Escribir el nombre de la propiedad en cada caso: a) 2 + (-6= (-6) + 2 =
b) 8+ (-5) = 3
c) 5+ ((-3) + 2) = (5+ (-3)) + 2
d) -9 + 0 = 0 + (-9) = -9
e) (-4) + 4 = 4 + (-4) = 0

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)