Ruby on Rails

I have an advertiser model and an experiment model. I've setup the
associations as follows:

Advertiser has_many :experiments
Experiment belongs_to :advertisers

The experiments table has a column titled "experiment_type", which can
either be AOV or Conversion. I am trying to display experiments for the
particular advertiser by experiment_type.

I can successfully display ALL of the experiments by advertiser with the
following iteration

<% @advertiser.experiments.each do |experiments| %>
<td><%= experiments.id %></td>
<td><%= experiments.name %></td>
<% end %>

Or I can successfully display all the experiment_type with the following
iteration

<% @aov.each do |experiments| %>
<td><%= experiments.id %></td>
<td><%= experiments.name %></td>
<% end %>

What I cannot figure out is how to show the experiment_type by
advertiser. I thought something like

<% @advertiser.aov.each do |experiments| %> would work, but it gives me
an undefined method `aov' for #<Advertiser:

Any help would be appreciated. Thanks in advance.

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