Answer:
?
Step-by-step explanation:
where are the options?
The answer is 12 percent change
To calculate the speed, divide 15.75 by 2.25 and you get 7 mph.
Answer: 0.064
Step-by-step explanation:
The formula to find the margin of error :-

Given : Significance level : 
Critical value : 
Sample size : n=400
The proportion of people support the candidate :p=0.44
Then , 
Hence, Margin of error = 0.064