Using it's formula, it is found that Val's margin of error is of 9.8 pounds.
<h3>Margin of error:</h3>The margin of error is given by the following equation:
In which:
- s is the standard deviation.
- n is the sample size.
In this problem:
- The standard deviation is of 50, hence
.
- Val weighed 100 cows, hence
.
Then:
Val's margin of error is of 9.8 pounds.
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