Julian and Brittany mailed 275 wedding invitations to family and friends and predicted that they would 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. (1 point)
The percent error is calculated by subtracting the predicted value from the actual value, dividing that difference by the actual value, and then multiplying by 100.
The predicted value is 275 (the number of invitations mailed).
The actual value is 265 (the number of people committed to attending).
Thus, the error is 275 - 265 = 10.
The percent error is (10/265) * 100 ≈ 3.77%.
Rounded to the nearest hundredth percent, the percent error is approximately 3.77%.