\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
During basketball practice, Samira makes a basket with probability \(\dfrac12\) on each shot.
  1. What hypothesis must be made to model 3 shots as a Bernoulli scheme?
  2. Under this hypothesis, represent this Bernoulli scheme with a tree diagram.
  3. Calculate the probability that:
    1. she makes at least one basket.
    2. she makes exactly two baskets.

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