2 years ago

If b equals 4 and = 7 what is ad

Mathematics

1 answer:

Elodia [21]2 years ago

3 0

Answer:

Step-by-step explanation:

I gussed but I'm not sure

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4x + 2 < 2x + 9<br> Which graph shows the solution of the<br> inequality?

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Answer:

i am pretty sure it's B correct me if i am wrong

Step-by-step explanation:

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3 years ago

Joan bought a shirt for 25.50 and the sales tax was 6 % what was the total price she paid for the shirt

SIZIF [17.4K]

The total price she paid for the shirt was $27.03

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3 years ago

Can someone help please

Elis [28]

Answer:

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Step-by-step explanation:

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3/2,0.25,-3/4,-1.0 least to greatest. Thanks.

Studentka2010 [4]

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3 years ago

Read 2 more answers

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