Type of Attack 
Find the probability that when 1 of the 2000 subjects is randomly selected, the person chosen was robbed or was victimized by an acquaintance or relative.
Definitions:
Chi-squared Test
A nonparametric statistical test used to assess the association between categorical variables or to determine the goodness of fit between observed data and expected outcomes.
More Than Two Categories
Refers to situations or conditions where a variable or outcome can fall into more than two distinct groups or classifications.
Z-test
A statistical test used to determine if there is a significant difference between sample and population means, assuming the population variance is known.
Chi-squared Test
The Chi-squared test is a statistical method used to determine if there is a significant difference between the expected and observed frequencies in one or more categories.
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