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2 years ago

And can you plz explain it to me

Mathematics

2 answers:

Grace [21]2 years ago

7 0

It's the one on the bottom left that says 5ft and 3ft, they're the same shape and ratio just turned around. It's also the square that says 6ft and 10ft because its only two times bigger than the original and has similar proportions.

scoray [572]2 years ago

6 0

So it’s pretty easy actually all you have to do is for instance all you have to do is if one shape has 3 feet on one side in another shape has 3 feet on the same side that the other shape does that goes in the similar in the other box which is not similar like if The numbers have a significant difference in that goes in the summer the last box in the middle box are the ones that for instance if it’s 3 feet and 5 feet that goes in the middle box. I hope that helps!

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3 years ago

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3 years ago

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gtnhenbr [62]

Answer:

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So the answer for this case would be n=22547 rounded up to the nearest integer

Step-by-step explanation:

Let's define some notation

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=58.2$ represent the population standard deviation

n represent the sample size

$ME =1$ represent the margin of error desire

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =+1 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance would be $\alpha=0.01$ and the critical value $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

$n=(\frac{2.58(58.2)}{1})^2 =22546.82 \approx 22547$

So the answer for this case would be n=22547 rounded up to the nearest integer

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