Table 3

Student t-test: functional treatment

Croissants on buffetWaste on plates
Week 1(0.87)Week 2(0.83)Week 3 (0.63)Week 1 (0.04)Week 2 (0.06)Week 3 (0.03)
Week 1 (0.87) t = 1.85
p = 0.11
t = 10.33
p = 0.000***
Week 1 (0.04) t = −1.03
p = 0.31
t = 2.19
p = 0.07*
Week 2 (0.83)  t = 10.26
p = 0.000***
Week 2 (0.06)  t = 3.97
p = 0.009**

Note(s): *p < 0.1, **p < 0.01, ***p < 0.001

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