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9.39 What test can be done in opthamology to test the hypothesis that mean degree of itching is the same for active versus placebo eyes ?

9.39 What test can be done in opthamology to test the hypothesis that mean degree of itching is the same for active versus placebo eyes ?Report a two-sided value.
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data_beta.xlsx

data
patient l
1
2
3
4
5
6
7
8
9
10 mean
sd r
1
3
4
2
4
2
2
3
4
1
2.6
1.17 diff
2
3
3
4
1
3
4
2
4
2
2.8
1.03 drug left( 0means placebo , 1 means drug given
drug right
drug
placebo
-1
1
0
1
2
0
0
1...

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