Answer:
the answer is X=8
Step-by-step explanation:
2(8)+4=20
Answer:
The answer is "
"
Step-by-step explanation:
For the +4 sample proportion
Sample percentage measurements estimated stdev
![= \sqrt{\frac{[(0.45)(1-0.45)]}{[(16+4)]}}\\\\ = \sqrt{\frac{[(0.45)(0.55)]}{[(20)]}}\\\\ = \sqrt{\frac{0.2475}{20}}\\\\= \sqrt{0.012375}\\\\=0.111](https://tex.z-dn.net/?f=%3D%20%5Csqrt%7B%5Cfrac%7B%5B%280.45%29%281-0.45%29%5D%7D%7B%5B%2816%2B4%29%5D%7D%7D%5C%5C%5C%5C%20%3D%20%5Csqrt%7B%5Cfrac%7B%5B%280.45%29%280.55%29%5D%7D%7B%5B%2820%29%5D%7D%7D%5C%5C%5C%5C%20%3D%20%5Csqrt%7B%5Cfrac%7B0.2475%7D%7B20%7D%7D%5C%5C%5C%5C%3D%20%5Csqrt%7B0.012375%7D%5C%5C%5C%5C%3D0.111)
Calculating the critical z for a=0.1, two-tailed = 1.64
Calculating the confidence interval:

You can find the x intercept by setting y to 0 and factor the equation.
0=2x^3+3x-2
0=(2x-1)(x+2)
We can make this equation =0 if x is -2 and 1/2.
So the x intercepts are (-2,0) and (0.5,0)
Answer:
1
Step-by-step explanation:
P = -1 + [ 1/(1+4) × (9- (-1)) ]
= -1 + (1/5 × 10)
= -1 +2
= 1
The answer to this question is 79 over 100.