In regression analysis, which statements are true?
i. data sets that include an influential point are nonlinear.
ii. influential points always reduce the coefficient of determination.
iii. all outliers are influential data points.
a) i only
b) ii only
c) iii only
d) none are true

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)