Question

4. A anniversary party host planned for 40 people, but actually 30 attended. Maria said the percent error was 20%. Is Maria correct? Justify your answer.​

Answer 1

Maria claimed that the percent error for the party attendance was 20%, but the actual percent error is 25%. Maria's calculation is incorrect.

Step-by-step explanation:

Maria calculated the percent error of the number of attendees to an anniversary party and stated that it was 20%.

To verify if Maria is correct, the percent error can be calculated using the formula:

Percent Error = ((Actual Value - Expected Value) / Expected Value) * 100%

In this case, the expected number of people was 40, and the actual number of attendees was 30. Plugging these values into the formula gives:

Percent Error = ((30 - 40) / 40) * 100%

Percent Error = (-10 / 40) * 100%

Percent Error = -25%

Maria's statement of 20% is incorrect; the correct percent error is 25%. It is also important to note that percent error is usually expressed as an absolute value, so in this context, the error would be 25% without the negative sign.