Vertical analysis (common-size) percentages for vallejo company’s sales, cost of goods sold, and expenses are listed here.
vertical analysis
2012 2011 2010
sales 100% 100% 100%
cost of goods sold 61.2 63.2 65.9
expenses 24.0 26.0 28.6
did vallejo’s net income as a percent of sales increase, decrease, or remain unchanged over the 3-year period? provide numerical support for your answer.

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)