How has Lydia shown that she was thinking marginally in buying her sister’s gift?

The following selected amounts are reported on the year-end unadjusted trial balance report for a company that uses the percent of sales method to determine its bad debts expense. accounts receivable $ 435,000 debit allowance for doubtful accounts 1,250 debit net sales 2,100,000 credit all sales are made on credit. based on past experience, the company estimates 1.0% of credit sales to be uncollectible. what adjusting entry should the company make at the end of the current year to record its estimated bad debts expense

The hawthorne works was a large western electric factory with 45,000 employees. during the 1920s and 1930s, hawthorne works was the site of some well-known industrial studies. in one of the studies, researchers investigated the impact of different working conditions on worker productivity. prior to the start of the study, researchers secretly measured workers' productivity for several weeks. then researchers chose two workers, who then chose their own teams. the teams were separated from the general workforce and completed their work in different experiment rooms where the researchers could observe them more easily. over a 5-year period researchers manipulated the structure of the workday for each team (number and duration of breaks and number of hours per shift). for each of these changes in working conditions, the researchers measured the effect on productivity. for some conditions, such as frequent short breaks, workers rebelled by intentionally decreasing productivity. why did the researchers secretly measure the workers' productivity before creating the two treatment groups? a, to create similar treatment groups so that a cause-and-effect relationship could be establishedb, to draw conclusions about the productivity of all workers in the plant based on the test groupsc, to directly control for confounding variablesd, to provide a baseline for measuring worker productivity

When slick heating company switched to an activity based costing system, it realized that it was allocating a much lower percentage of factory overhead to a product line that the marketing department was trying to push. the product line may contain which type of products?