A Brooklyn College professor would like to determine whether their class' Statistics exam scores are affected by the setting of testing. This professor asks 7 of her students to take the exam outside on the grass, another 7 inside in the usual classroom, and a third group of 7 ata concert. Below are the results. Test the hypothesis that exam setting affects performance using an alpha level of 0.05.

grass 4607J concert

• 80 99 20
• 98 85 12
• 94 83 25
• 98 56 45
• 65 75 60
• 79 62 41
• 93 65 20
• 72 90 24

What is the appropriate statistical test?

What is the null hypothesis?

What is the alternative hypothesis?

Find the Critical Value(s)

Calculate the obtained statistic (Sofotware).

Make a Decision:

What does your decision mean?