Answer:
![n\geq 23](https://tex.z-dn.net/?f=n%5Cgeq%2023)
Step-by-step explanation:
-For a known standard deviation, the sample size for a desired margin of error is calculated using the formula:
![n\geq (\frac{z\sigma}{ME})^2](https://tex.z-dn.net/?f=n%5Cgeq%20%28%5Cfrac%7Bz%5Csigma%7D%7BME%7D%29%5E2)
Where:
is the standard deviation
is the desired margin of error.
We substitute our given values to calculate the sample size:
![n\geq (\frac{z\sigma}{ME})^2\\\\\geq (\frac{1.96\times 12}{5})^2\\\\\geq 22.13\approx23](https://tex.z-dn.net/?f=n%5Cgeq%20%28%5Cfrac%7Bz%5Csigma%7D%7BME%7D%29%5E2%5C%5C%5C%5C%5Cgeq%20%28%5Cfrac%7B1.96%5Ctimes%2012%7D%7B5%7D%29%5E2%5C%5C%5C%5C%5Cgeq%2022.13%5Capprox23)
Hence, the smallest desired sample size is 23
The euro has depreciated and the dollar as appreciated
The answer is 6(x^2 -1) I have provided a picture with my work and the answer
Answer:
y=x216–6x16+4116
Step-by-step explanation:
plato :)