Julian and Brittany mailed 275 wedding invitations to family and friends and predicted that they would

Question

all attend. Only 265 out of 275 people committed to attending the wedding. Calculate the percent error
in their prediction. Round your answer to the nearest hundredth percent
Responses
3.63%
0.038%
3.77%
-4.00%

Answer 1

To calculate the percent error, we can use the formula:
Percent Error = (|Observed Value - Predicted Value| / Predicted Value) * 100%

In this case, the observed value (number of people who committed to attending) is 265 and the predicted value (number of invitations sent) is 275.

Percent Error = (|265 - 275| / 275) * 100%
Percent Error = (10 / 275) * 100%
Percent Error = 0.03636 * 100%
Percent Error = 3.63%

Rounding to the nearest hundredth percent, the percent error is 3.63%. Therefore, the correct answer is 3.63%.