Answer:

Step-by-step explanation:
-Given that 
-We determine the z-value corresponding to the 95% confidence level:

-The margin of error is the degree of error from the real value and is calculated as follows:

Hence, the margin of error is 
Yes it is square root of 75 is 8.66
Answer:
From my understanding i think it is 315, but I think I'm wrong.
Step-by-step explanation:
8/12 is still owed, and when you simplify the fraction it becomes 2/3
Answer:
1,000 because it's in the thousands place
Step-by-step explanation: