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Rom4ik [11]
3 years ago
15

25>0.99x+3.99 show all work to solve the inequality

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
8 0
25>99/100x+399/100
2500>99x+399
2101>99x
2101/99>x
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y=f(x)

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y= 2x^2 + 2x +3

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What is the measure of
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A polymer is manufactured in a batch chemical process. Viscosity measurements show that it is approximately normally distributed
PilotLPTM [1.2K]

Answer: (751.05, 766.95)

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\overline{x}\pm z*\dfrac{\sigma}{\sqrt{n}},

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759\pm (2.5760)\dfrac{20}{\sqrt{42}}\\\\=759\pm (2.5760)(3.086067)\\\\=759\pm7.9497=(759-7.9497,\ 759+7.9497)\]\\=(751.0503,\ 766.9497)\approx(751.05,\ 766.95)

∴ A 99% confidence interval around the true population mean viscosity : (751.05, 766.95)

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4 years ago
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