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ruslelena [56]
2 years ago
12

The difference between an observational study and an experiment is that

Mathematics
1 answer:
lorasvet [3.4K]2 years ago
7 0

Answer:

I think it's the last one! In an experiment, one group is studied over a short period of time---

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2 years ago
D) Suppose you pick one marble from the bag at random. Find the expected value of its number.
Vaselesa [24]

C) The probability that you pick at least one purple marble is 98%.

<h3><u>Probability</u></h3>

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Learn more about probability in brainly.com/question/27656131

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