3 years ago

Follow the process of completing the square to solve x2 - 10x + 8 = 0.

Mathematics

1 answer:

storchak [24]3 years ago

7 0

Answer:

104

Step-by-step explanation:

subtract [4-100] Which equals [ =96] then add [+8] which equals=104

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kondor19780726 [428]

Answer: 1.509

Step-by-step explanation:

The formula of Margin of Error for (n<30):-

$E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

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Level of confidence = 0.99

Significance level : $\alpha=1-0.99=0.01$

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Critical value : $t_{n-1, \alpha/2}=t_{21,0.005}= 2.831$

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Hence, the margin of error for a 99% confidence interval for the population mean =1.509

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