C is the answer for this question (2/10)
Answer:
The answer is "1.30".
Step-by-step explanation:
Proportion of population![=0.20](https://tex.z-dn.net/?f=%3D0.20)
Ratio sample![=\frac{70}{300}=\frac{7}{30}=0.23](https://tex.z-dn.net/?f=%3D%5Cfrac%7B70%7D%7B300%7D%3D%5Cfrac%7B7%7D%7B30%7D%3D0.23)
Statistics of the test:
![\to Z=\frac{(0.23-0.2)}{\sqrt{(\frac{0.2\times(1-0.2)}{300})}}\\\\](https://tex.z-dn.net/?f=%5Cto%20Z%3D%5Cfrac%7B%280.23-0.2%29%7D%7B%5Csqrt%7B%28%5Cfrac%7B0.2%5Ctimes%281-0.2%29%7D%7B300%7D%29%7D%7D%5C%5C%5C%5C)
![=1.30](https://tex.z-dn.net/?f=%3D1.30)
Y represent the total number of newspapers sold by Colby.
Hello :
<span>5+4g+8=1
g = -3 : 5+4(-3)+8 = 13-12 = 1 ... right</span>