Question

1. Twenty four volunteers were randomly divided into two groups to receive the
cholesterol test. Group A was the special diet group, and group B was the drug treatment
group. Serum cholesterol (mmol/L) was measured before and after the experiment
(Table). The data are shown in the table. Please analyze: 1) whether the serum
cholesterol level of the two groups before the test is equivalent?2) Are the two groups
effective?3) Are the two cholesterol lowering measures effective?
GROUPA
participants before after
1 6.11 6.00
2 6.81 6.83
3 6.48 6.49
4 7.59 7.28
5 6.42 6.30
6 6.94 6.64
7 9.17 8.42
GROUP B
participants before after
1
6.90 6.93
2
6.40 6.35
3
6.48 6.41
4
7.00 7.10
5
6.53 6.41
6
6.70
6.68
7
9.10
9.05
8 7.33
7.00
8
7.31
6.83
9 6.94
9
6.91
6.96
6.58
7.22
10 7.67
10
6.81
6.73
6.57
11 8.15
11
7.65
8.16
12
6.6
6.17
12
6.98
6.52​

Answer 1

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