Which expression is most likely more efficiently solved using a calculator instead of by hand? Two-sevenths plus five-sevenths minus six-sixths
Three-tenths minus seven-eighths plus seven-eighths
Five-eighths minus two-eighths plus StartFraction 7 over 20 EndFraction
Five-twelfths minus three-twelfths plus seven-twelfths
help if i fail this my mom is gonna kill me

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)