Final answer:
The expected number of students to receive $250 or more from a sample of 200 cannot be determined without additional data on the population's distribution. Representativeness and expected students with specific anxiety and success levels are also indeterminable with the given information.
Step-by-step explanation:
The question provided seems to be related to statistics, specifically about understanding expected values in sampling. To determine the expected number of students who will receive $250 or more from a sample of 200 students, we must have information about the frequency or probability distribution of this event within the population. Since such distribution or relevant details are not provided, the correct answer is that it cannot be determined based on the information given.
Regarding whether a sample is representative of the entire population of 10,000 part-time students, a judgment on the representativeness of a sample cannot be made without information on how the sample was collected and the characteristics of the population. Similarly, without specific data on anxiety levels and the need to succeed among students, the expected number of students with a med-low anxiety level and a low need to succeed in school is also indeterminable from the provided options.