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Artyom0805 [142]
2 years ago
6

PLEASE HELP!! 20 POINTS PLUS BRAINLIEST IF YOURE RIGHT!!

Mathematics
1 answer:
zaharov [31]2 years ago
8 0
Firstly, we have to find the mean. The mean is simply the average of the numbers, which we find by adding each number in the sequence and then dividing that result by the total amount of numbers.

<em>13.3 + 14.3 + 15.3 + 16.3 + 17.3 = 76.5</em>

<em>76.5 / 5 = 15.3

</em>Okay, so our average is 15.3.
<em>
Now, </em>we have to subtract the mean from each number and then square the result.

<em>(13.3 - 15.3)^2 = 4</em>
<em>(14.3 - 15.3)^2 = 1</em>
<em>(15.3 - 15.3)^2 = 0</em>
<em>(16.3 - 15.3)^2 = 1</em>
<em>(17.3 - 15.3)^2 = 4

</em>Now we have to find the mean of those numbers!
<em>
4 + 1 + 0 + 1 + 4 = 10

10 / 2 = 2

</em>Finally, we take the square root of that number and we have our standard deviation. =)<em>
</em>
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Martin deposits $200 in a savings account that earns 5% annual interest. four years later, cary deposits $200 in an account earn
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<span>Martin deposits $200 in a savings account that earns 5% annual interest.

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1              200 * 5%                    200(1.05)

2              200(1.05) * 5%          200(1.05)^2

3              200(1.05)^2*5%        200(1.05)^3

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four years later, cary deposits $200 in an account earning the same interest.

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<span><span>year         interest                       balance

5              200 * 5%                    200(1.05)

6              200(1.05) * 5%          200(1.05)^2

7             200(1.05)^2*5%        200(1.05)^3

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