Math Problem Statement
 Terrie Moffitt, the author of the dual taxonomy theory, proposed that there is a group of offenders known as the life course persistent offenders who commit both frequent and serious offenses throughout their lives. Suppose you have a sample of 25 young males who have been in juvenile institutions at least twice. The mean age of their first arrest was 12 and the standard deviation is 1.9. Construct a 95 percent confidence interval around this point estimate. a) the intervals are 11.84 and 12.16 b) the intervals are 11.20 and 12.80 c) the intervals are 10.78 and 14.22 d) none of the above
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Confidence Intervals
Formulas
Confidence Interval formula: CI = x̄ ± z * (s / √n)
Theorems

Suitable Grade Level
Advanced High School
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