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Svetach [21]
3 years ago
10

Can anyone explain how to solve this please?

Mathematics
1 answer:
Virty [35]3 years ago
4 0
I'd start by squaring everything, personally.


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kumpel [21]
40,561÷ 47= 863

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~Bob Ross®
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On a test that has a normal distribution, a score of 49 falls two standard deviations below the mean, and a score of 61 falls on
Zolol [24]

The mean of this test will be 57.

<h3>What is Standard Deviation and Mean?</h3>

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean.

The mean can be used to get an overall idea, or picture, of the data set.

Let Mean be 'm'

and standard deviation= \sigma

So, m-2\sigma=49

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Solving the above two equation we get

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Now, m= 61-\sigma

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Learn more about mean and standard deviation here:

brainly.com/question/16030790

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2 years ago
What is 14.9 round to?
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13.
NARA [144]

Step-by-step explanation:

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What is the value of <img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B1331%7D" id="TexFormula1" title="\sqrt[3]{1331}" alt="\s
Umnica [9.8K]

Answer:im not sure i wish i can help but goodluck

Step-by-step explanation:

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