Answer:
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.
