Question 5.15

5.15 Use the Normal approximation.

Suppose that we toss a fair coin 200 times. Use the Normal approximation to find the probability that the sample proportion of heads is

  1. between 0.4 and 0.6.
  2. between 0.45 and 0.55.

5.15

(a) 0.9954. (b) 0.8414.