Discussion:
Q: To test the hypothesis that students who finish an exam first get better grades, Professor Hardtack kept track of the order in which papers were handed in.
+ The first 25 papers showed a mean score of 77.1 with a standard deviation of 19.6
+ The last 24 papers showed a mean score of 69.3 with a standard deviation of 24.9.
Is this a significant difference at ¦Á = .05?
RQ: Do students who finish an exam first earn better grades than those who finish the exam last?
A. Choose the Hypothesis
B. Specify the Decision Rule
C. Calculate the Test Statistic (assume equal variances)
D. Make the Decision
E. Give an interpretation of the Decision
F. P-value Method
1. Calculate the P-value, what is it?
2. Does that P-value support the Decision in D