Paolo starts his first day at a new job. Because Paolo has many visible tattoos and piercings, some of his co-workers assume he is unreliable. However, Paolo shows up to work every day and on time. His co-workers then assume Paolo must have responsible roommates who help him get to work on time. This example best illustrates that

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?