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Binomial Distribution

One

1. What is the probability of getting exactly 2 heads in 3 coin flips if each flip has a 0.5 chance of heads?

<form>
  <input type="radio" name="q1" value="0.25"> 0.25<br>
  <input type="radio" name="q1" value="0.5"> 0.5<br>
  <input type="radio" name="q1" value="0.375"> 0.375<br>
  <input type="radio" name="q1" value="0.75"> 0.75<br>
</form>
<button onclick="checkAnswer('q1', '0.375', 'answer1')">Check Answer</button>
<p class="answer" id="answer1"></p>