not able to cheked radio button

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HTML

jQuery

this is my html

<ul>
<li id="117184normal" class="statusDefaultAns">
<a href="#">
<h2>
<input quiz-option="multiple-radio" id="117184" type="radio" name="quiz-radio" res="117184"/>
</h2>
</a>
</li></ul>

and using js code

function Select(id) {
    var newid = id;
    $("#" + newid).attr('checked', 'checked').button("refresh");
}

with onclick i am calling this method but i am not able to checked radio button.