4 years ago

I need help with number 4

Mathematics

2 answers:

Ray Of Light [21]4 years ago

6 0

You will divide the 12 by 28: 12/28 and that equals 3/7

Nadya [2.5K]4 years ago

5 0

12/28 meters/second or 0.42857 m/s

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djverab [1.8K]

Answer:

(0,2) (2,0)

Step-by-step explanation:

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Answer:

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siniylev [52]

Answer:

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3 years ago

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Advocard [28]

Answer:

$3.3\leq x\leq 3.5$

Step-by-step explanation:

The 95% confidence interval can be calculated as:

$x'-z_{\alpha/2}\frac{s}{\sqrt{n}} \leq x\leq x'+z_{\alpha/2}\frac{s}{\sqrt{n}}$

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So, replacing $x'$ by 3.4 liters, $s$ by 1.3 liters, n by 650 and $z_{\alpha /2}$ by 1.96, we get that the 95% confidence interval is equal to:

$3.4-(1.96*\frac{1.3}{\sqrt{650}})\leq x\leq 3.4+(1.96*\frac{1.3}{\sqrt{650}}) \\3.4-0.1\leq x\leq 3.4+0.1\\3.3\leq x\leq 3.5$

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4 years ago

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