Show us the options so we can help
Answer:
none
Explanation:
Fill in each option for x individually.
I) 9 
-10 - 4(-1)
II) 9 -10 - 4(-3)
III) 9 -10 - 4(-2)
Then, simplify the right side of each inequality.
I) 9 -6
II) 9 2
III) 9 -2
Each of these inequalities are flase. 9 is not less than or equal to any of these values, so the answer is none.
E=Z*sqrt (p(1-p)/N), where E= error margin, p=proportion, N=sample size
Katrina's margin error at 85% confidence interval: E=1.96*sqrt (p(1-p)/100) = 0.196 sqrt (1(1-p))
Mathew's margin error at 99% confidence interval: E= 2.58*sqrt (p(1-p)/400) = 0.129 sqrt (p(1-p))
Since both obtained same estimate of proportion (that is, value of p), it can be seen that Mathew's estimate will have a small error (That is, 0.129 is smaller than 0.196). This can be attributed to larger sample size although a wider confidence (99%) interval was considered.
327+425+550+486 is 1788 so to get the answer you need to divide it by 6
The answer of x is
X=84,8
