Robin donated bags of grain that each weighed 30/4 pounds to the local food shelf. If the total weight of the grain was 160 pounds, how many bags of grain did Robin donate?

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

If jobs have been undercosted due to underallocation of manufacturing overhead, then cost of goods sold (cogs) is too low and which of the following corrections must be made? a. decrease cogs for double the amount of the underallocation b. increase cogs for double the amount of the underallocation c. decrease cogs for the amount of the underallocation d. increase cogs for the amount of the underallocation

Which external factor has enabled addition of special effects in advertisements and tracking of responses of customers over websites?