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Radda [10]
3 years ago
8

Find the value of 0.34 multiply by 9

Mathematics
2 answers:
Alinara [238K]3 years ago
8 0
The value of 0.34 multiply by 9 is 3.06
tresset_1 [31]3 years ago
4 0
0.34 * 9 = 3.06



                 0.34
              *  9.00
----------------------------------
                  3.06




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Answer:

a) The formula is given by mean \pm the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.

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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.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

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The formula is given by mean \pm the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.

Part b

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

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