2 years ago

Twice the sum of a number and 4

Mathematics

1 answer:

Marta_Voda [28]2 years ago

7 0

Answer:

That is 1 as 1+1=2 and twicing it is 4.

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Step-by-step explanation:

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How large a sample size is required to vary population mean within 0.30 seat of the sample mean with 95% confidence interval?

This is at least n, in which n is found when $M = 0.3, \sigma = 4.103$ . So

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$0.3 = 1.96*\frac{4.103}{\sqrt{n}}$

$0.3\sqrt{n} = 1.96*4.103$

$\sqrt{n} = \frac{1.96*4.103}{0.3}$

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Rouding up

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Answer: 3z^2 + 3z +2
Hope this helps : )

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