Solutions to Exercises


    1. N (66,2.5)
    2. 0.5404
    3. No
    4. Between 64.7 and 67.3 inches


    1. N (36,10)
    2. 0.3446
    3. 29.3

    1. the time (in hours) a 4-year-old in China spends unsupervised per day
    2. N(3,1.5)
    3. 0.0912
    4. 0
    5. 2.21 hours

    1. The duration of a criminal trial
    2. N(21,7)
    3. 0.3341
    4. 22.77

    a. The sample mean is 5.51 and the sample standard deviation is 2.15
    e. N (5.51,2.15)
    f. 0.6081
    g. 0.64

  1.  
    a. The sample mean is 60,136.4 and the sample standard deviation is 10,468.1.
    e. N (60136.4, 10468.1)
    f. 0.7440
    g. 0.7167

  1. B
  2. C
  3. D
  4. C
  5. A
  6. D
  7. C
  8. B