My study has 100 participants. I have a table to randomly assign a treatment and control group. I can't find literature indicating how many participants should be assigned to the control group.|||Really depends on what you are testing, but the smaller your control group, the larger your margin for error. so to play absolutely safe, make your control group (statistically) identical to your study group. See link below for more information:
http://en.wikipedia.org/wiki/Scientific_鈥?/a>|||i would say 50%|||moderator-wise, you can only have 15, and it's up to the owner as to how many they need or have
How do I make someone a moderator of my group?
http://help.yahoo.com/l/us/yahoo/groups/鈥?/a>
From the list on the left, click Members and locate the member on the Members page.
Click Edit Membership.
A little way down, click Change to Moderator.
Click on the Make Moderator button to confirm.
How do I set moderator privileges?
http://help.yahoo.com/l/us/yahoo/groups/鈥?/a>|||I say no more then one can handle but 15-30 each control er
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