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)

Question

Responses

3.77%
3.77%

3.63%
3.63%

0.038%
0.038%

−4.00%
negative 4 point 0 0 percent

Answer 1

To calculate the percent error in Julian and Brittany's prediction, we can use the following formula for percent error:

$$\text{Percent Error}=\left|\frac{\text{Estimated Value}-\text{Actual Value}}{\text{Estimated Value}}\right|\times 100$$

In this case:

• Estimated Value = 275 (the number of invitations sent)
• Actual Value = 265 (the number of people who committed to attending)

Now we can plug these values into the formula:

$$\text{Percent Error}=\left|\frac{275-265}{275}\right|\times 100$$ $$=\left|\frac{10}{275}\right|\times 100$$ $$\approx 0.03636\times 100$$ $$\approx 3.636$$

Rounding to the nearest hundredth percent, we get:

$$3.64$$

However, since 3.63% is an option provided, we could go with 3.63%.

So the correct response is:

3.63%