Answer:

Step-by-step explanation:
The firm tests 75 parts, and finds that 0.25 of them are notusable
n = 75
x = 0.25 \times 75 = 18.75≈19



Confidence level = 95%
So, Z_\alpha at 95% = 1.96
Formula of confidence interval of one sample proportion:


Confidence interval 
In 2005 he average weight is 4 ounces, they have gotten bigger since, clearly, but that is the average weight.
Does this answer your question?<span />
X<<span>y+<span>3 its simple here is your answer</span></span>
Answer:
x=sqrt{22}
Step-by-step explanation:
Answer:
in the intersection region of all the solution in the system.