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alex41 [277]
3 years ago
5

A study was completed in Florida. In southern Florida, the study involved 3,000 patients; 54% of them experienced flulike sympto

ms during the same month. The study had a margin of error of 1.8%. What does that mean for the study? The confidence interval is between 52.2% and 55.8%. The confidence interval is between 50.4% and 57.6%. The confidence interval is between 53% and 55%. The confidence interval is between 30% and 97.2%.
Mathematics
1 answer:
polet [3.4K]3 years ago
6 0

Answer:

A (52,2%, 55,8%)

Step-by-step explanation:

To get the confidence interval, we have to add the margin of error to the point estimator.

The middle of the interval is 54%, and the ME is 1.8%. Don't forget that this means ±1.8%!

54 - 1.8 = 52.2%

54 + 1.8 = 55.8%

So our confidence interval is (52,2%, 55,8%) and the answer is A.

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For this case we must solve the following proportion:

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Subtracting 2 from both sides of the equation:

x = 2-2\\x = 0

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x = 0

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