5.4.3 Quiz: Two-Way Frequency Tables
Students
90
Teachers
5
Total
95
10
10
20
100
15
115
A person is randomly selected from those surveyed.
Are being a student and preferring "shark" independent events? Why or why
not?
OA. Yes, they are independent because P(student) 0.87 and
P(student/shark) 0.95.
OB. Yes, they are independent because P(student) 0.87 and
P(student/shark) 0.83.
OC. No, they are not independent because P(student) 0.87 and
P(student/shark) = 0.83.
D. No, they are not independent because P(student) 0.87 and
P(student/shark) * 0.95.
My
ZA
