Question

Of the total number of stations included in the assignment, the number which were express stations was ________.

1) 22
2) 190
3) Cannot be determined
4) None of the above

Answer 1

The percentage ownership of T-shirts question cannot be determined without further information. Express train problems can be solved using provided data and kinematics. The sampling question suggests convenience sampling does not provide a representative sample.

Step-by-step explanation:

The question about the percentage of people who own at most three T-shirts costing more than $19 each cannot be answered without additional information. Therefore, the correct answer is (d) cannot be determined, as we lack data on the total number of people surveyed and their T-shirt ownership patterns.

In contrast, the question regarding the express train involves kinematic equations, providing details such as the train's initial velocity, deceleration, and the length of the station. With this information, one can calculate the duration the nose of the train stays in the station, the velocity of the train as it exits, and details about when the end of the train leaves the station and its velocity. These are physics problems that involve calculations based on provided variables.

The survey question about station listeners' preferences asks if a sample of 200 people at a music concert event can represent the entire listener population of 20,000. The answer is that convenience sampling may not yield a representative sample, especially if the population has diverse preferences that are not reflected at the concert event.