X+4+2x-10=2x+1
3x-6=2x+1
X-6=1
X=7
1.63
Thousandths is the 3rd place after the decimal. Since the number after is 5 or greater you round up to 1.63
Answer:
2) 0.0914
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the z-score that has a p-value of .
The margin of error is of:
A survey of 114 drivers is performed and 62 people say they will not drive until all passengers in the vehicle are buckled up.
This means that
95% confidence level
So , z is the value of Z that has a p-value of , so .
What would be the margin error for this confidence interval?
Thus the margin of error is 0.0914, option 2).
Answer:
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