A statistics instructor wonders whether significant differences exist in her students final exam scores in her three different sections. She randomly selects the scores from

A statistics instructor wonders whether significant differences exist in her students’ final exam scores in her three different sections. She randomly selects the scores from 10 different students in each section. A portion of the data is shown below; the complete data set, labeled Exam_Scores, can be found on the text website . Assume exam scores are normally distributed.

Do these data provide enough evidence at the 5% significance level to indicate that there are some differences in final exam scores among these threesections?

Section1 85 68 Section 2 91 84 Section 3 74 69 74 75 73