hero122hero
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5. There are 28 right-handed students in a class of 31. What is the probability that a student chosen at random will be left-handed?

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s0uptv
There are 28 right handed students out of 31 total.
So there are 31 - 28 = 3 left handed students. 
The probability of choosing a left handed student is 3/31.

hope this helps, Hero122Hero! :)
ivycoveredwalls
28 of the 31 students are right-handed. So 31 - 28 = 3 students are left-handed. The probability of randomly choosing a lefty is [tex]\frac{3}{31}[/tex].