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3 years ago

What is the vertical distance between 580ft above sea level and 200ft below sea level. Help

Mathematics

2 answers:

Ierofanga [76]3 years ago

6 0

Answer:

780ft Hope i helped <3

Step-by-step explanation:

telo118 [61]3 years ago

5 0

Answer:

780 ft

Step-by-step explanation:

you have to think of it as adding the two and not subtracting because they are asking the total distance. The first one is above sea level so it's 580 above sea level. the second one is under sea level so 200 ft under sea level. that means that the total distance if we start from under the sea 200 ft up to the sea level and then another 580 ft to above sea level!

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Answer:

The estimation for the proportion of tenth graders reading at or below the eighth grade level is given by:

$\hat p =\frac{955-812}{955}= 0.150$

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Step-by-step explanation:

We have the following info given:

$n= 955$ represent the sampel size slected

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The estimation for the proportion of tenth graders reading at or below the eighth grade level is given by:

$\hat p =\frac{955-812}{955}= 0.150$

The confidence interval for the proportion would be given by this formula

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

For the 90% confidence interval the significance is $\alpha=1-0.9=0.1$ and $\alpha/2=0.05$ , with that value we can find the quantile required for the interval in the normal standard distribution and we got.

$z_{\alpha/2}=1.64$

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