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jadenicole908
25.11.2019 •
Mathematics
What is the margin of error?
will measured the diameter of a penny as 1.9 cm using the
ruler.
1.9 cm
1.5 cm to 2.0 cm
1.5 cm to 2.5 cm
1.85 cm to 1.95 cm
1.90 cm to 1.95 cm
@
2
3
4
note: ruler is not drawn to scale,
Solved
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Ответ:
The margin of error is 1.85 cm to 1.95 cm.
Step-by-step explanation:
Given:
Will measured the diameter of a penny as 1.9 cm using the ruler.
We need to find the margin error.
Now, as we know that the margin of error is a statistic expressing the amount of random sampling error in a survey's results.
It is an amount (usually small) that is allowed for in case of miscalculation or change of circumstances.
Now, we have the margin of error to be:
1.85 cm to 1.95 cm.
As, the value of change to the left and right of 19 is same and is small it is 0.05.
So, 1.9-0.05 = 1.85 cm
and 1.9+0.05 = 1.95 cm .
Hence, the margin of error is: ± 0.05.
Therefore, the margin of error is 1.85 cm to 1.95 cm.
Ответ:
4.50
Step-by-step explanation:
If you saw the other explanation, you'd see that each of those can be multiplied and devided by 4.50. Just multiply 4.50 by 1, 2, 4, and 7.