In just a few short weeks, jake would arrive back in the states from his semester abroad. he was already in a temp agency's database from the previous summer, when he spent 8 weeks working for an accounting firm. jake will again try to hire on as a during the summer months. the company that hired him last summer typically hires several college students each year, mainly because they have good computer skills, and the company does not need to offer college students benefits.

Asupermarket has been experiencing long lines during peak periods of the day. the problem is noticeably worse on certain days of the week, and the peak periods are sometimes different according to the day of the week. there are usually enough workers on the job to open all cash registers. the problem is knowing when to call some of the workers stocking shelves up to the front to work the checkout counters. how might decision models the supermarket? what data would be needed to develop these models?