Whats the best way to call in late, do you wait to tell them when you get there, or do you call ahead to let them know and explain?

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.

Plastic and steel are substitutes in the production of body panels for certain automobiles. if the price of plastic increases, with other things remaining the same, we would expect: a) the demand curve for plastic to shift to the left. b) the price of steel to fall. c) the demand curve for steel to shift to the left d) nothing to happen to steel because it is only a substitute for plastic. e) the demand curve for steel to shift to the right

What are some questions to ask a clerk in the dispatch office?