Chapter 11.1, Problem 8P

Interpretation: Test of Independence Consider Charlotte's study of source of fraud/identity theft and gender (see Problem 6). She computed sample $X^2=10.2$.

(a) How many degrees of freedom are used? Recall that there were 5 sources of fraud/identity theft and, of course. 2 genders. Approximate the P-value and conclude the test at the 5% level of significance. Would it seem that gender and source of fraud/identity theft are independent?

(b) From this study, can Charlotte identify which source of fraud/identity theft is dependent with respect to gender? Explain.