Question

select the correct answer. mateo teaches a continuing education class at the library on tuesday nights. he estimates that 75% of his students are satisfied or very satisfied with the class. last week, he asked a random sample of students to take a survey on their experience in the class. however, the results showed that only 70% indicated that they are satisfied or very satisfied with the class. he decides to randomly survey more of his students. how will mateo know whether his model is valid or not? a. it is valid if the result from all the surveys and the model get closer together. b. it is impossible to determine whether the model is valid. c. it is valid if the result from all the surveys and the model stay the same. d. it is valid if the result from all the surveys and the model get farther apart.

Explanation:

A valid model is one where real - world data (from surveys in this case) aligns with the model's predictions. As more surveys are conducted, if the results of the surveys and the initial model estimate get closer together, it indicates the model is likely valid. If they move further apart or stay the same without convergence, it's a sign of potential invalidity.

Answer:

A. It is valid if the result from all the surveys and the model get closer together.