Final answer:
Mary and Sue should choose to make the bagels in-house based on the make-or-buy analysis.
Step-by-step explanation:
The make-or-buy analysis is a decision-making tool used by businesses to determine whether it is more cost-effective to produce a product or service in-house or to buy it from an external supplier. In this case, Mary and Sue are deciding whether to make the bagels on-site or buy them from a local bakery. They have calculated the costs involved in both options and determined that the total cost of buying the bagels is $25,000, while the total cost of making the bagels is $24,000. Therefore, based on the cost analysis, it would be more cost-effective for Mary and Sue to make the bagels in-house.