A national survey of 2000 adult citizens of a nation found that 24% dreaded Valentine's Day. The margin of error for the survey was 8.9 percentage points with 85% confidence. Explain what this means. Which statement below is the best explanation? A. There is 85% confidence that the proportion of the adult citizens of the nation that dreaded Valentine's Day is between 0.151 and 0.329. B. There is 76.1% to 93.9% confidence that 24% of the adult citizens of the nation dreaded Valentine's Day. C. In 85% of samples of adult citizens of the nation, the proportion that dreaded Valentine's Day is between 0.151 and 0.329. D. There is 85% confidence that 24% of the adult citizens of the nation dreaded Valentine's Day.

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gabev420

13.12.2022

Mathematics

The formula to find area of a circle is $a = \pi r^2$

As you can see, the diameter of your circle is 24 ft. The radius of a circle is half the diameter, so r=12 ft.

Assuming that $\pi =3.14$ ,

We can plug in the values.

$a=\pi r^2 = \pi *(12)^2$

a= 452.2 ft^2

The answer is D. 452.2 ft^2.

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