Question: Question 1: How do you know when to use a t test? What types of variables are appropriate for its use? Provide examples of variables

Question 1: How do you know when to use a t test? What types of variables are appropriate for its use? Provide examples of variables used in criminal justice research.

Question 2: Define independent samples and dependent samples. How can you tell the differences between them? Provide examples of each pertaining to criminal justice research.

Question 3: What are the different types of dependent samples? How are these types of samples similar, and how are they different? Again, provide examples of each pertaining to criminal justice research.

Question 4: Discuss the difference between pooled and separate variance. How do you know which to use in an independent samples t-test?

Question 5: Under what circumstances should a two-population test for differences in proportions be used? Provide an example of how this would apply in criminal justice research.

Question 6: A researcher uses a t-test to compare crime rates between two groups of cities: those having higher numbers of universities and those having lower numbers of universities. The researcher finds that cities with higher numbers of universities have significantly lower crime rates. Does this mean that higher numbers of universities cause lower crime? Why or why not? If not, what is the flaw in this conclusion?

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