{{ block title }}
    Boxes, Marbles and Sequences
{{ endblock }}
{{ block content }}

<script src='{{ static 'randomSequences.js'}}'></script>

<style>
table, th, td {
    border: 1px solid black;
    border-collapse: collapse;
    text-align: center;
    vertical-align: middle;
}
</style>

<p>
    There are two types of boxes filled with four (4) marbles:
<ol>
    <li>The Yellow box has three (3) yellow marbles and one (1) green marble.</li>
    <li>The Green box has three (3) green marbles and one (1) yellow marble.</li>
</ol>

    Then, the probability of drawing one single yellow marble
    is equal to 75%
    (three-quarters of the time a yellow marble is drawn)
    if the box selected is Yellow
    and 25% (one-quarter of the time a yellow marble is drawn)
    if the box selected is Green.

    The following table summarizes the probabilities associated with each box:
</p>

<p>
<table>
<thead>
  <tr>
    <th>Box</th>
    <th>Marbles</th>
    <th> Probability <BR>(in percentage points) <BR> of drawing <BR> one <strong>yellow</strong> ball </th>
    <th> Probability <BR>(in percentage points) <BR> of drawing <BR> one <strong>green</strong> ball </th>
  </tr>
</thead>
<tbody>
  <tr>
    <td>
        <button type="button"
        onclick=""
        style="width: 120px; height: 120px;
            background-color: yellow;
            border-color:black">
            Yellow Box
        </button>
    </td>
    <td>
        <img src='https://upload.wikimedia.org/wikipedia/commons/a/a5/Wikisource_proofread_yellow.svg' width='50' height='50'/>
        <img src='https://upload.wikimedia.org/wikipedia/commons/a/a5/Wikisource_proofread_yellow.svg' width='50' height='50'/>
        <BR>
        <img src='https://upload.wikimedia.org/wikipedia/commons/a/a5/Wikisource_proofread_yellow.svg' width='50' height='50'/>
        <img src='https://upload.wikimedia.org/wikipedia/commons/8/89/Wikisource_proofread_green_circle.svg' width='50' height='50'/>
    </td>
    <td>
        75
    </td>
    <td>
        25
    </td>
  </tr>
  <tr>
    <td>
        <button type="button"
        onclick=""
        style="width: 120px; height: 120px;
            background-color: green;
            border-color:black">
            Green Box
        </button>
    </td>
    <td>
        <img src='https://upload.wikimedia.org/wikipedia/commons/a/a5/Wikisource_proofread_yellow.svg' width='50' height='50'/>
        <img src='https://upload.wikimedia.org/wikipedia/commons/8/89/Wikisource_proofread_green_circle.svg' width='50' height='50'/>
        <BR>
        <img src='https://upload.wikimedia.org/wikipedia/commons/8/89/Wikisource_proofread_green_circle.svg' width='50' height='50'/>
        <img src='https://upload.wikimedia.org/wikipedia/commons/8/89/Wikisource_proofread_green_circle.svg' width='50' height='50'/>
    </td>
    <td>
        25
    </td>
    <td>
        75
    </td>
  </tr>
</tbody>
</table>
</p>

<h4>Generating Random Sequences</h4>

<p>
  In each round,
</p>


<ol>
    <li> The computer randomly selects a Yellow or Green box.</li>
    <li> From the box secretly selected,
        the computer will draw a sequence of 10 marbles,
        recording the color and replacing the marble in its box after each draw. </li>
    <li> You and another participant (participant 2)
        will observe the same number of yellow and green marbles from the sequence. </li>
</ol>

<p>
    Click on the boxes below to draw a sequence of 10 marbles
    from each box.
</p>

<!-- yellow box button -->
<button type="button"
        onclick="yellowrandomCase(75)"
        style="width: 120px; height: 120px;
            background-color: yellow;
            border-color:black">
    Yellow Box
</button>

<p id="random_seq"></p>

<!-- green box button -->
<button type="button"
        onclick="greenrandomCase(75)"
        style="width: 120px; height: 120px;
            background-color: green;
            border-color:black">
    Green Box
</button>

<p id="green_seq"></p>



<p>
    Click the 'Next' button if you understand the process of drawing the sequences,
    or ask the experimenter if you have any questions.
</p>

    {{ formfields }}

    {{ next_button }}

{{ endblock }}