Question: A confidence interval for p is given by (.399, .501). Find the margin of error correct to 3 decimal places. In a random sample of

  1. A confidence interval for p is given by (.399, .501). Find the margin of error correct to 3 decimal places.
  2. In a random sample of 400 people who were questioned regarding their participation in sports, 160 said that they did participate. Find a 98% confidence interval for p. Put your answers in interval notation i.e. (a, b) and round your answers to 3 decimal places
  3. It was found that in a sample of 90 teenage boys, 63 had received speeding tickets. What is the 90% confidence interval of the proportion of teenage boys who have received speeding tickets? Express your answer in interval notation rounded to 3 decimal places.

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