Question 965295: About 11% of the general population is left handed. At a school with an average class size of 30, each classroom contains four left-handed desks. Does this seem adequate?
My teacher told me the answer is 77.05% but, I do not know how to get that answer.
Answer by Fombitz(32388)   (Show Source):
You can put this solution on YOUR website! What is the question?
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The only question you asked it "Does this seem adequate?". Sound like yes or no should be the response, not 77.05%.
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If you have 11% of the general population being left handed, you'd assume 11% of the class was left handed.
You can only choose an integer number of left handed desks.
3 desks would mean 3/30 or 10% are left handed.
4 desks would mean 4/30 or 13.3% are left handed.
Choosing four seems adequate since it gives you a little extra room above the 11% whereas 3 desks leaves you shy of the average 11%.
So yes, adequate.
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