Criminal Justice Statistics

Lab Activity #7 – Confidence Intervals

Name ___________________________________________

Compute confidence intervals for each of the following questions. Show all steps.

1. Mean = 125.00; SD = 15.00; N = 18

90%

95%

99%

1. Mean = 4,726.00; SD = 500.00; N = 32

90%

95%

99%

1. Mean = 0.37; SD = 0.05; N = 21

90%

95%

99%

1. Mean = 3.00; SD = 0.33; N = 220

75%

2