Question

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.(1 point)
Responses

−4.00%
negative 4 point 0 0 percent

0.038%
0.038%

3.77%
3.77%

3.63%

Answer 1

To calculate the percent error, we first need to find the difference between the predicted attendance and the actual attendance.

Predicted attendance = 275
Actual attendance = 265

Difference = Predicted attendance - Actual attendance
Difference = 275 - 265
Difference = 10

Then, we divide the difference by the predicted attendance and multiply by 100 to get the percent error.

Percent error = (Difference / Predicted attendance) * 100
Percent error = (10 / 275) * 100
Percent error = 0.03636 * 100
Percent error ≈ 3.63

Therefore, the percent error in their prediction is approximately 3.63%. So the correct answer is 3.63%.