ulian 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.

Answer 1

To find the percent error, we need to compare the predicted value (275) with the actual value (265).

The formula for percent error is:
Percent Error = (|Predicted Value - Actual Value| / Actual Value) * 100%

Plugging in the values:
Percent Error = (|275 - 265| / 265) * 100%

Simplifying:
Percent Error = (10 / 265) * 100%

Calculating the division:
Percent Error = 0.037735849056603776...

Rounding to the nearest hundredth percent:
Percent Error ≈ 0.04%

Therefore, the percent error in their prediction is approximately 0.04%.