2 years ago

Mr. Whitley works at a furniture store and

Mathematics

1 answer:

photoshop1234 [79]2 years ago

4 0

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The average weight of the entire batch of the boxes of cereal filled today was 20.5 ounces. A random sample of four boxes was se

zhenek [66]

Answer:

$s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$s= 0.286$

And then the estimator for the standard error is given by:

$SE= \frac{0.286}{\sqrt{4}}= 0.143$

Step-by-step explanation:

For this case we have the following dataset given:

20.05, 20.56, 20.72, and 20.43

We can assume that the distribution for the sample mean is given by:

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

And the standard error for this case would be:

$SE= \frac{\sigma}{\sqrt{n}}$

And we can estimate the deviation with the sample deviation:

$s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$s= 0.286$

And then the estimator for the standard error is given by:

$SE= \frac{0.286}{\sqrt{4}}= 0.143$

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3 years ago

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Natalka [10]

The Answer to your problem is:

#2 Answer:

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3 years ago

Midtown delivery service delivers packages which cost 1.90

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What are the zeros of this function?

fiasKO [112]

Answer:

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Step-by-step explanation:

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Jina made an international phone call for 4.5 minutes. She was charged $0.26 for each minute. Find the amount she paid.

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Step-by-step explanation:

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