# Db forum #9: Hypothesis testing

1. In your own words, define and explain each of the following terms and concepts:

a. the null hypothesis

b. the alternate hypothesis

c. type I (alpha) error

d. type II (beta) error

e. inferential statistics

2. Answer the following questions from Chapter 9: 12, 14, 16, & 18.

12. Which inferential statistical analysis would be used if the independent variable (IV) was criminal defendants ages at sentencing (measured in years) and the dependent variable (DV) length of their terms of confinement (measured in months)?
A. Chi-square
B. T test
C. ANOVA
D. Correlation

14. Which inferential statistical analysis would be used if the IV was criminal defendants gender (measured as male or female) and the DV was whether or not they obtained retrial release (measured as yes or no)?

A. Chi-square
B. T test
C. ANOVA
D. Correlation

16. Which inferential statistical analysis would be used if the IV was assault victims race (measured as white, black, Latino, or other) and the DV was the length of prison terms given to their attackers (measured in months)?

A. Chi-square
B. T test
C. ANOVA
D. Correlation

18. Which inferential statistical analysis would be used if the IV was assault victims gender (measured as male or female) and the DV was the length of their attackers (measured in months)?

A. Chi-square
B. T test
C. ANOVA
D. Correlation

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