Final answer:
The question asks to calculate the probability of two events concerning meat portions, but the information provided is insufficient to calculate a precise answer as it lacks details on individual event probabilities or totals.
Step-by-step explanation:
The question relates to calculating probability, which is a common topic in high school mathematics. We are given two events: not getting a chicken breast and getting an 18-oz. pork chop. These events are specific cases of disjoint probabilities, meaning they do not occur simultaneously. To find the probability of both events happening, you would need individual probabilities and the rules of probability theory. Unfortunately, the provided list of various food items and their weights or sizes does not supply enough data to calculate these probabilities directly. The necessary information to provide a detailed answer, such as the total number of food items available or the individual probabilities of each event, is missing.