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suter [353]
3 years ago
5

How have vaccines impacted health?

Mathematics
2 answers:
polet [3.4K]3 years ago
5 0
B. Or D. Would be your answer. The reason why I would say B. Is because people have different immune systems which makes your body reject the vaccine contents. But on the other hand for D. Is that it they have made a lot of pretty bad sicknesses almost disappear such as chicken pox.
fgiga [73]3 years ago
3 0

Answer:

D some disease have almost completely disappeared

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3 years ago
PLEASE HELP ME. NO PHONY ANSWERS TY, ANSWER IF YOUR 100% RIGHT!
Ksivusya [100]

The relative frequency of female mathematics majors will be 0.5142.

<h3>How to find the relative frequency?</h3>

The proportion of the examined subgroup's value to the overall account is known as relative frequency.

A sample of 317 students at a university is surveyed.

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⇒ 36 / (36 + 34)

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Learn more about conditional relative frequency here:

brainly.com/question/8358304

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