Question: A researcher was investigating how the type of feedback students receive affects their mastery of complex learning tasks. Forty students were selected to participate in the study and were randomly assigned to one of four groups (10 students per group). The groups were formed on the basis of the type of feedback they received as they learned the task: all positive, all negative, a mixture of positive and negative, or no feedback. After completion of the task, students were categorized as having been successful or unsuccessful in learning the task. Following are the numbers of students in each category. Is type of feedback related to learning outcome? Use α=.05