User Promotion Confidence Intervals

Binomial proportion confidence interval for how likely a user's uploads will achieve a fav count of at at least n with 95% confidence within the past 30 days.

<% @report.users.each do |user| %> <% end %>

User	Level	score:1+	score:5+	score:10+
<%= link_to user.name, user_path(user) %>	<%= user.level_string %>	<%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 1), :precision => 0 %>	<%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 5), :precision => 0 %>	<%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 10), :precision => 0 %>