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What test or distribution should I use for before and after treatment?
Say, I have 30 subjects I test their blood before and after a pill they take a pill, what kind of test should I use?
I want to test mean difference, so, paired t-test? or Wilcoxon signed rank test?
The data looks like this
person before after
#1 100 89
#2 90 75
#3 120 100
#4 132 130
... ... ...
#30 141 120
I was told use binomial with normal approximation, but don't know why. I am so confused, how should I tell? someone please help. Thanks so much.
Say, I have 30 subjects I test their blood before and after a pill they take a pill, what kind of test should I use?
I want to test mean difference, so, paired t-test? or Wilcoxon signed rank test?
The data looks like this
person before after
#1 100 89
#2 90 75
#3 120 100
#4 132 130
... ... ...
#30 141 120
I was told use binomial with normal approximation, but don't know why. I am so confused, how should I tell? someone please help. Thanks so much.
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