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Pavlova-9 [17]
3 years ago
11

In which case would it be most appropriate to use feet as a unit of measurement?

Mathematics
2 answers:
Cerrena [4.2K]3 years ago
8 0
<span>In which case would it be most appropriate to use feet as a unit of measurement? </span>C. height of a door

The length of length of a paper clip and the width of an eyelash would be too small. It could not be measured by feet. The <span>distance from Chicago to San Francisco would be too long and should be measured by miles.

I hope this helps! :)
~ erudite</span>
il63 [147K]3 years ago
3 0
A height of a door because the distance from Chicago to San Francisco would be expressed as miles and the width of an eyelashes would be millimeters and the lenght of a paperclip would be centimerters.
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The answer is A.

Step-by-step explanation:

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2 years ago
If Upper X overbar equals 62​, Upper S equals 8​, and n equals 36​, and assuming that the population is normally​ distributed, c
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Answer:

The 99% confidence interval would be given by (58.373;65.627)    

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Step-by-step explanation:

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".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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\bar X=62 represent the sample mean

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s=8 represent the sample standard deviation

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Part a: Confidence interval

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

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

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df=n-1=36-1=35

Since the Confidence is 0.99 or 99%, the value of \alpha=0.01 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,35)".And we see that t_{\alpha/2}=2.72

Now we have everything in order to replace into formula (1):

62-2.72\frac{8}{\sqrt{36}}=58.373    

62+2.72\frac{8}{\sqrt{36}}=65.627    

So on this case the 99% confidence interval would be given by (58.373;65.627)    

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