Teacher:Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
Teacher: Now, understand the problem? Solve this instance: Design an experiment that tests multiple types of popcorn using repeated trials method should be used to determine the type of popcorn that produces the greatest number of popped kernels.
Student:
Which method should be used to determine the type of popcorn that produces the greatest number of popped kernels?