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Deffense [45]
2 years ago
14

HELP ASAP Find the volume of the sphere. Round your answer to the nearest tenth.

Mathematics
1 answer:
ipn [44]2 years ago
5 0

Answer:

V = 3053.63 mm^3

Step-by-step explanation:

radius : 9mm

V = 4/3 * pi * r^3

V = 4/3 * (3.1415926535898...) * 9^3

V = 3053.63 mm^3

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A population has a standard deviation of 5.5. What is the standard error of the sampling distribution if the sample size is 81?
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\sigma = 5.5

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And replacing we got:

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Step-by-step explanation:

For this case we know the population deviation given by:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})

And the standard error would be:

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And replacing we got:

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3 years ago
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