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2 years ago

Cube-shaped blocks are packed into a cube-shaped storage container.

Mathematics

2 answers:

erma4kov [3.2K]2 years ago

8 0

Answer:

cm^3 = cube?

Step-by-step explanation:

Valentin [98]2 years ago

7 0

That is an interesting fact thank you for sharing your information

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2 years ago

Explain the difference between squaring a number and square roots.

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2 years ago

Coordinates for 4-6i and -4+2i

Ket [755]

Answer:

4-6i has coordinate (4,-6), and -4+2i has coordinate (-4,2)

Step-by-step explanation:

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2 years ago

Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval for a

Vikki [24]

Answer:

$0.81 - 2.326 \sqrt{\frac{0.81(1-0.81)}{131}}=0.730$

$0.81 + 2.326 \sqrt{\frac{0.81(1-0.81)}{131}}=0.890$

And the confidence interval would be:

$0.730 \leq \p \leq 0.890$

Step-by-step explanation:

Information given:

$n=131$ represent the sample size

$\hat p=0.81$ represent the estimated proportion

The confidence interval would be given by this formula

$\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

For the 98% confidence interval the value of $\alpha=1-0.98=0.02$ and $\alpha/2=0.01$ , with that value we can find the quantile required for the interval in the normal standard distribution.

$z_{\alpha/2}=2.326$

And replacing into the confidence interval formula we got:

$0.81 - 2.326 \sqrt{\frac{0.81(1-0.81)}{131}}=0.730$

$0.81 + 2.326 \sqrt{\frac{0.81(1-0.81)}{131}}=0.890$

And the confidence interval would be:

$0.730 \leq \p \leq 0.890$

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3 years ago