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20 POINTS

Part D How many of the 320 million Americans would you predict wear CORRECTIVE lenses?

User Danila Ganchar
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1 Answer

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16 votes

Answer:

320,000,000 * 0.638 = 204,160,000

Explanation:

Assuming the sample is a good representation of the people from the United States.

Since there were 1,000 surveyed... and 638 of them were wearing glasses, that makes a proportion of 638 out of 1,000 people, or 63,8 / 100 people... so 63.8%... or 0.638

So, if we assume that the US population is of 320 million, how many people does that make wearing glasses.... we just have to multiply 320M by 0.638

User Anzhelika
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