Should the number of individuals or the number of attempts be the denominator in this question?

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Let's just say we have 161 participants trying to make a free-throw shot in basketball. Of these 161:

  • 71 make it on their first shot
  • 23 make it on their second shot (2 shots total)
  • 2 make it on their third shot (3 shots total)
  • 65 take a combined total of 94 shots before giving up

So a total of 219 shots were taken. If posed the question "What is the chance of making a free-throw shot on your first try", using this dataset, is the answer 71/219 (32.4%), or is the answer 71/161 (44.0%)?