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Alekssandra [29.7K]
3 years ago
11

It is recommended that people have 1 gram of calcium each day. How many milligrams of calcium is that?

Mathematics
1 answer:
user100 [1]3 years ago
8 0

Answer:

1,000

Step-by-step explanation:

1,000 miligrams is 1 gram hope this helps god bless

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Find the variance of the following data. Round your answer to one decimal place. x 1 2 3 4 5 P(X=x) 0.3 0.2 0.2 0.1 0.2
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The variance of a distribution is the square of the standard deviation

The variance of the data is 2.2

<h3>How to calculate the variance</h3>

Start by calculating the expected value using:

E(x) = \sum x* P(x)

So, we have:

E(x) = 1 * 0.3 + 2* 0.2 +3 * 0.2 + 4 * 0.1 + 5 * 0.2

This gives

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Next, calculate E(x^2) using:

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So, we have:

E(x^2) = 1^2 * 0.3 + 2^2* 0.2 +3^2 * 0.2 + 4^2 * 0.1 + 5^2 * 0.2

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Var(x) = E(x^2) - (E(x))^2

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Var(x) = 2.2

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Read more about variance at:

brainly.com/question/15858152

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