(( all - Same )) ----- Quadrilaterals are polygons
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Answer: 82
Step-by-step explanation:
The formula to find the sample size is given by :-
, where E = Margin of error.
= Population standard deviation for the prior study.
As per given , we have
gallons.
Margin of error : E= 110 gallons
Critical value for 99% confidence level = z* = 2.576
Then, the required sample size :
{Rounded to the nearest integer.}
Hence, the minimum sample size = 82
So, We Have:
We Know that Negative Exponents Equal Division. So:![\frac{4}{9}^{( -\frac{1}{2} )} = \frac{1}{ \sqrt[]{ \frac{4}{9} } } = \frac{1}{ (\frac{2}{3} )} = \frac{3}{2} = 1.5](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B9%7D%5E%7B%28%20-%5Cfrac%7B1%7D%7B2%7D%20%29%7D%20%20%3D%20%20%20%20%5Cfrac%7B1%7D%7B%20%5Csqrt%5B%5D%7B%20%5Cfrac%7B4%7D%7B9%7D%20%7D%20%7D%20%20%3D%20%20%5Cfrac%7B1%7D%7B%20%28%5Cfrac%7B2%7D%7B3%7D%20%29%7D%20%20%3D%20%20%5Cfrac%7B3%7D%7B2%7D%20%20%3D%201.5)
I Hope This Helps!
We Know that Negative Exponents Equal Division. So:
I Hope This Helps!