<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B8%20%7D%20%20%5Ctimes%20%20%5Csqrt%7B32%7D%20" id="TexFormula1" title=" \sqrt{8 }

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Sav [38]

2 years ago

\times \sqrt{32} " alt=" \sqrt{8 } \times \sqrt{32} " align="absmiddle" class="latex-formula">
help with radical

Mathematics

1 answer:

Rudik [331]2 years ago

3 0

That’s a weird input for a problem, it’s just a bunch of slashes, probably radical

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Answer:

A. 20%

Step-by-step explanation:

These events are independent, because if David eats a healthy breakfast cannot influence on would be rain or not.

"And" for probabilities of independent events means "x" (times).

80% = 0.8

25% = 0.25

0.8*0.25 = 0.2 = 20%

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3 years ago

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coldgirl [10]

Answer:

C.I = 0.7608 ≤ p ≤ 0.8392

Step-by-step explanation:

Given that:

Let consider a random sample n = 400 candidates where 320 residents indicated that they voted for Obama

probability $\hat p = \dfrac{320}{400}$

= 0.8

Level of significance ∝ = 100 -95%

= 5%

= 0.05

The objective is to develop a 95% confidence interval estimate for the proportion of all Boston residents who voted for Obama.

The confidence internal can be computed as:

$=\hat p \pm Z_{\alpha/2} \sqrt{\dfrac{ p(1-p)}{n } }$

where;

$Z_{0.05/2}$ = $Z_{0.025}$ = 1.960

SO;

$=0.8 \pm 1.960 \sqrt{\dfrac{ 0.8(1-0.8)}{400 } }$

$=0.8 \pm 1.960 \sqrt{\dfrac{ 0.8(0.2)}{400 } }$

$=0.8 \pm 1.960 \sqrt{\dfrac{ 0.16}{400 } }$

$=0.8 \pm 1.960 \sqrt{4 \times 10^{-4}}$

$=0.8 \pm 1.960 \times 0.02}$

$=0.8 \pm 0.0392$

= 0.8 - 0.0392 OR 0.8 + 0.0392

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2 years ago

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It would be a rectangle

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2 years ago

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Liono4ka [1.6K]

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The second option is correct.

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3 years ago

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