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A biologist measures the growth of 7 plants after applying a growth hormone. The height (in cm) is measured at the start and after 2 weeks.
Plant
1
2
3
4
5
6
7
Week 0
12.5
10.2
11.8
13.0
9.5
12.1
10.8
Week 2
13.1
10.8
12.0
13.2
10.1
12.9
11.2
Test at the \(1\pourcent\) significance level whether there has been significant growth.
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