Student |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
Pre-chess Memory Score |
410 |
610 |
640 |
675 |
500 |
780 |
610 |
625 |
450 |
720 |
675 |
670 |
Post-chess Memory Score |
550 |
670 |
850 |
650 |
710 |
795 |
700 |
795 |
690 |
710 |
785 |
675 |
Memory Score Difference |
Test the claim at the α = 0.05 level of significance that students who participated in the chess program achieve higher memory scores after completion of the program.
A. H0: µd = 0
HA: µd > 0
B. H0: µ1 = µ2
HA: µ1 > µ2
C. H0: µd = 0
HA: µd < 0
D. H0: µ1 = µ2
HA: µ1 ≠ µ2
Let us denote the difference
d = Post-chess Memory Score - Pre-chess Memory Score
There is sufficient evidence to support the claim that students who participated in the chess program achieve higher memory scores after completion of the program.
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