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Which numbers should go in the shaded overlap? Factors of 30 Factors of 20

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1 answer:

babymother [125]2 years ago

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Both of these numbers have 2 and 5 as their factors

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Answer:

$\bar X = \frac{Lower +Upper}{2}$

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And the margin of error with this one:

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Step-by-step explanation:

Assuming that the parameter of interest is the sample mean $\mu$ . And we can estimate this parameter with a confidence interval given by this formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

For this case the confidence interval is given by (1.9, 3.3)

Since the confidence interval is symmetrical we can estimate the sample mean with this formula:

$\bar X = \frac{Lower +Upper}{2}$

$\bar X= \frac{1.9+3.3}{2}= 2.6$

And the margin of error with this one:

$\bar X = \frac{Upper-Lower}{2}$

$ME = \frac{3.3-1.9}{2}= 0.7$

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