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Question 3
Handedness
Left Right
Gender
Female
Male
Total
18
122
The incomplete table above summarizes the number
of left-handed students and right-handed students by
gender for the eighth-grade students at Keisel Middle
School. There are 6 times as many right-handed female
students as there are left-handed female students, and
there are 8 times as many right-handed male students as
there are left-handed male students. If there are a total
of 18-left-handed students and 122 right-handed students
in the school, which of the following is closest to the
probability that a right-handed student selected at random
is female? (Note: Assume that none of the eighth-grade
students are both right-handed and left-handed.)
A. 0.613
B. 0.541
C. 0.410
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