3 years ago

Solve -17.6 - (-21.3)

Mathematics

1 answer:

AleksAgata [21]3 years ago

3 0

-17.6 -(-21.3) = -17.6 + 21.3=3.7

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The margin of error (E) is calculated as follows:

$E = z \times \sqrt{\frac{\sigma^2}{n}}$

So, we have:

$E = z \times \sqrt{\frac{3.2^2}{320}}$

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