1. Meals. A restaurateur anticipates serving about 180 people on a Friday evening, and believes that about 20% of the patrons will order the chef's steak special. How many of those meals should he plan on serving in order to be pretty sure of having enough steaks on hand to meet customer demand? Justify your answer, including an explanation of what "pretty sure" means to you.
2. Sampling. A sample is chosen randomly from a population that can be described by a Normal model.
a) What's the sampling distribution model for the sample mean? Describe shape, center, and spread.
b) If we choose a larger sample, what's the effect on this sampling distribution model?