An insurance company would like to perform a chi-square test to investigate whether a difference exists in the proportion of male and female teenagers who text while they drive. A random sample of 80 male teenagers found that 50 indicated they texted while driving. A random sample of 120 female teenagers found that 65 indicated they texted while driving. How many degrees of freedom does the chi-square critical value have?
A. 3
B. 1
C. 4
D. 2
Answer: B. 1
Business
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Business