2) Insurance companies are interested in the average health costs each year for

Mathematics

1 answer:

sukhopar [10]2 years ago

8 0

Answer:

sample 44

Step-by-step explanation:

math is not it

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P( total shown=3) rolling two fair number cubes

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Dice have six sides. So 6 cubed would be 216. Does that sound right?

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3 years ago

Rosetta wants to estimate the percentage of people who rent their home. She surveys 250 individuals and finds that 48 rent their

Andreas93 [3]

Answer:

$0.192 - 1.645\sqrt{\frac{0.192(1-0.192)}{250}}=0.151$

$0.192 + 1.645\sqrt{\frac{0.192(1-0.192)}{250}}=0.233$

Step-by-step explanation:

Information given

$X= 48$ number of people who rent their home

$n= 250$ represent the sample size

$\hat p =\frac{48}{250}= 0.192$ represent the proportion of people who rent their home

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by $\alpha=1-0.90=0.1$ and $\alpha/2 =0.05$ . And the critical value would be given by:

$z_{\alpha/2}=\pm 1.645$

The confidence interval for the mean is given by the following formula:

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

If we replace the values obtained we got:

$0.192 - 1.645\sqrt{\frac{0.192(1-0.192)}{250}}=0.151$

$0.192 + 1.645\sqrt{\frac{0.192(1-0.192)}{250}}=0.233$

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2 years ago

What is 1034÷22 ?<br><img src="https://tex.z-dn.net/?f=1034%20%5Cdiv%2022%20" id="TexFormula1" title="1034 \div 22 " alt="1034 \

Mrrafil [7]

The answer would be 47

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2 years ago

Read 2 more answers

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kipiarov [429]

$x=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\
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-4ac=4a^2x^2+4abx+b^2-b^2\\
-4ac=4a^2x^2+4abx\\
c=-ax^2-bx$