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3 years ago

10

Census data suggested that 25% of those eligible for grand jury service were black, yet a random sample of 1050 people called to

appear for possible duty yielded only 177 blacks. Using a level .01 test, does this data argue strongly for a conclusion of discrimination?

1 answer:

Jet001 [13]3 years ago

7 0

yes this data is strongly for a conclusion of discrimination

{ explanation is attached below )

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How many ml of 20 percent acid should be added to pure acid to make 70 ml of 30 percent acid?

Novay_Z [31]

Answer:

61.25%

Step-by-step explanation:

How many ml of 20 percent acid should be added to pure acid

to make 70 ml of 30 percent acid?

:

let x = amt of 20% mixture

then

(70-x) = amt of pure acid

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0.20x + (70-x) =0 .30(70)

0.20x + 70 - x = 21

= 21 - 70

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x = 61.25%

x = +61.25 ml of 20% stuff

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2 years ago

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vladimir2022 [97]

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2 years ago

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AlladinOne [14]

Answer:

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Step-by-step explanation:

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3 years ago

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gogolik [260]

Answer:

C. 1/3

Hope this helps!:)

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2 years ago

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Let f = (ax + by + 4z) i + (x + cz) j + (9y + mx) k where a, b,c, and m are constants.

Tom [10]

Let $\mathcal R$ be an arbitrary closed region with boundary the surface $\mathcal S$ . By the divergence theorem,

$\displaysytle\iint_{\mathcal S}\mathbf f(x,y,z)\cdot\mathrm d\mathbf S=\iiint_{\mathcal R}\nabla\cdot\mathbf f(x,y,z)\,\mathrm dV$

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2 years ago