Final answer:
The question seeks the probability of a concurrent health event and its prediction, which typically requires specific probabilities that were not provided. Answers to questions about probabilities of such events generally use fundamental probability concepts and formulas for independent events when calculating the likelihood of two or more combined occurrences.
Step-by-step explanation:
The question pertains to calculating the probability of a specific event occurring given certain conditions. The student asked about the likelihood of Erin experiencing a heart attack and also about that event being correctly predicted by a test. To provide accurate probabilities, one would typically need additional information like the respective probabilities of Erin having a heart attack and the test correctly predicting it. Since none of that information is provided within the context of the student's inquiry, it is not possible to determine the correct answer. Generally, in such questions, key formulas like the multiplication rule for the probability of the intersection of two independent events might be used: P(A and B) = P(A) × P(B).
Other questions listed such as those related to waiting time, finding a parking space, and possible results from independent events would be calculated using similar principles of probability, and depend on given probabilities or additional context.