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11Alexandr11 [23.1K]
2 years ago
14

PLEASE HELP

Mathematics
2 answers:
Nikolay [14]2 years ago
8 0

Answer:

204,160,000

Step-by-step 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

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

mylen [45]2 years ago
4 0

Answer:

<u><em>39.68 million[</em></u>

Step-by-step explanation:

Remember that the sample is 1000 people.

Of those 1000 people we know that 762 wear corrective lenses. 124 of these people wear contact lenses.

The probability that a randomly selected person will wear contact lenses is:

P = \frac{124}{1000}\\\\P = 0.124

Then, the expected number of people who wear contact lenses is:

N = 320 * P

Where N is given in units of millions.

N = 320 * 0.124

N = 39.68\ million

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