For Exercises 19–22, a confidence interval for is given. Use the confidence interval to test, using level of significance , whether differs from each of the indicated hypothesized values.

Question 10.133

21. A 90% confidence interval for is (0.1, 0.11). Hypothesized values are

  1. 0.151
  2. 0.115
  3. 0.105

10.3.21

(a) . The hypothesized value of 0.151 lies outside of the interval (0.1, 0.11), so we reject at the level of significance. (b) . The hypothesized value of 0.115 lies outside of the interval (0.1, 0.11), so we reject at the level of significance. (c) . The hypothesized value of 0.105 lies inside of the interval (0.1, 0.11), so we do not reject at the level of significance.