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In a sample of 400 individuals who patriciate in a trial to quit smoking, 102 of them are successful in quitting. Use 0.05 for all

In a sample of 400 individuals who patriciate in a trial to quit smoking, 102 of them are successful in quitting. Use 0.05 for all tests.

  1. Verify that the normal distribution can be used as the probability model.
  2. What is the estimate of the proportion in the population represented in the sample?
  3. What is the standard error of the proportion?

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