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Over [174]
3 years ago
12

What is the measure of ∠F?

Mathematics
2 answers:
kifflom [539]3 years ago
7 0

Answer:

94°

Step-by-step explanation:

This is a quadrelateral, and so all the sides must equal 360.

Set the equation: F + 66 + 132 + 68 = 360

Isolate the variable F. First, simplify. Combine like terms: F + (266) = 360

Isolate the variable F. Subtract 266 from both sides:

F + 266 (-266) = 360 (-266)

F = 360 - 266

F = 94

94 is your answer.

~

Alla [95]3 years ago
4 0
The answer is 94 degrees because this is how you work it out.

And a full shape is 360 degrees so you subtract it.

132+68+66=266
360-266=94
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\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)

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Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

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\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)

Or equivalently:

\bar X \pm ME

For this case we have the interval given (3.9, 7.7) and we want to find the margin of error. Using the property of symmetry for a confidence interval we can estimate the margin of error with this formula:

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