Answer:
- yirsurusitr
Step-by-step explanation:
f
- fftzethatwtk
- dg5teyd5lwey Hrhht c.f.rsxtmrshzt fsfyrscytn
Answer:
Salageto Sala Geta Yu hi layp gos on
Answer:
<em>The size of the sample 'n' = 2401</em>
Step-by-step explanation:
<u><em>Step:1</em></u>
Given that the margin of error = 2 % = 0.02
The margin of error is determined by
![M.E = \frac{Z_{0.05} \sqrt{p(1-p)} }{\sqrt{n} }](https://tex.z-dn.net/?f=M.E%20%3D%20%5Cfrac%7BZ_%7B0.05%7D%20%5Csqrt%7Bp%281-p%29%7D%20%7D%7B%5Csqrt%7Bn%7D%20%7D)
we know that the proportion
![\sqrt{p(1-p)} < \frac{1}{2}](https://tex.z-dn.net/?f=%5Csqrt%7Bp%281-p%29%7D%20%3C%20%5Cfrac%7B1%7D%7B2%7D)
<u><em>Step:2</em></u>
<em>The margin of error is determined by </em>
<em> </em>
<em></em>
![\sqrt{n} = \frac{1.96}{2 X 0.02}](https://tex.z-dn.net/?f=%5Csqrt%7Bn%7D%20%3D%20%20%5Cfrac%7B1.96%7D%7B2%20X%200.02%7D)
√n = 49
Squaring on both sides, we get
n = 49 × 49
n = 2401
<u>Final answer:-</u>
<em>The size of the sample 'n' = 2401 </em>
Answer:
f(r) = r/4
Step-by-step explanation:
The volume formula for a cylinder is ...
V = πr^2·h
The total surface area of a cylinder is ...
A = 2πr^2 +2πrh
Then the ratio of volume to surface area is ...
V/A = (πr^2·h)/(2πr(r+h)) = rh/(2(r+h))
__
In this problem, we have h = r, so the ratio becomes ...
V/A = r·r/(2(r+r)) = r/4
As a function of r, this is ...
f(r) = r/4