Question 7.190

13. Women and Depression. According to the National Institute for Mental Health, 12% of women are affected by a depressive disorder each year. Suppose we take samples of 100 women. Answer the following:

  1. Find , where represents the sample proportion of women who are affected by a depressive disorder each year.
  2. Calculate .
  3. Use your answer to (a) to calculate .
  4. Find the 5th and 95th percentiles of the sample proportion.

7.99.13

(a) 0.1093 (b) 0.3907 (c) 0.8907 (d) 0.0665 and 0.1735