The parking lots perimeter is 102 yards because 378/9 is 42 and 42x2 is 84 added to 9 doubled (18) is 102 yards
I’m not sure but I think it’s sample x
Answer:
25
Step-by-step explanation:
divide the length value by 100.
Answer:
![SD= 3.24](https://tex.z-dn.net/?f=SD%3D%203.24)
Step-by-step explanation:
Given
![Proportion, p = 30\%](https://tex.z-dn.net/?f=Proportion%2C%20p%20%3D%2030%5C%25)
![Population, n = 50](https://tex.z-dn.net/?f=Population%2C%20n%20%3D%2050)
Required
Determine the standard deviation
Standard Deviation (SD) is calculated as:
![SD= \sqrt{np(1-p)}](https://tex.z-dn.net/?f=SD%3D%20%5Csqrt%7Bnp%281-p%29%7D)
Substitute values for n and p
![SD= \sqrt{50 * 30\% * (1-30\%)}](https://tex.z-dn.net/?f=SD%3D%20%5Csqrt%7B50%20%2A%2030%5C%25%20%2A%20%281-30%5C%25%29%7D)
Convert percentage to decimals
![SD= \sqrt{50 * 0.30 * (1-0.30)}](https://tex.z-dn.net/?f=SD%3D%20%5Csqrt%7B50%20%2A%200.30%20%2A%20%281-0.30%29%7D)
![SD= \sqrt{50 * 0.30 * 0.70}](https://tex.z-dn.net/?f=SD%3D%20%5Csqrt%7B50%20%2A%200.30%20%2A%200.70%7D)
![SD= \sqrt{10.5}](https://tex.z-dn.net/?f=SD%3D%20%5Csqrt%7B10.5%7D)
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<em> approximated</em>
The general equation of a circle, with radius R and center (h, k) is:
![(x-h)^2+(y-k)^2=R^2](https://tex.z-dn.net/?f=%28x-h%29%5E2%2B%28y-k%29%5E2%3DR%5E2)
Using the data given, the equation would be: