00:00 Blanka Brikho: Attempt 1
A study is being conducted on whether natural lighting improves test scores. The
new room has natural sunlight, while the old has no windows and fluorescent lights.
Use a .05 level of significance to test the claim that scores are higher in the new
testing area.
3
student
6
new
old
1
90
87
9
2
85
80
3
93
93
12
4.
74
76
5
81
80
15
6
76
65
7
90
79
8
95
95
9
100
98
10
76
70
11
67
69
12
88
92
13
79
70
14 80 66 15 93 90