Question

A fifteen-year-old is having a birthday party at the local swimming pool. Explain two different counts that she can estimate for the party. One should be an over-estimate and the other can be an under-estimate. A. Over-estimate: Count the number of people who have RSVP'd to the party. Under-estimate: Count the number of invitations that were sent out.

B. Over-estimate: Estimate the number of people who might show up without RSVPing. Under-estimate: Estimate the percentage of people who will not be able to attend due to illness, prior commitments, etc.
C. Over-estimate: Add the number of people who have RSVP'd to the party and the number of people who might show up without RSVPing. Under-estimate: Multiply the number of invitations by the percentage of people who will not be able to attend due to illness, prior commitments, etc., and subtract this number from the total number of invitations.
D. Over-estimate: Estimate the total number of people who might attend the party, including those who have RSVP'd and those who might show up without RSVPing. Under-estimate: Estimate the percentage of people who will not be able to attend due to illness, prior commitments, etc., and multiply this number by the total number of people who might attend the party.

Answer 1

An over-estimate for the number of guests attending a party would include RSVPs plus potential unannounced guests, while an under-estimate would consider the percentage of invitees unlikely to attend and subtract this from the total invitations.

Step-by-step explanation:

A fifteen-year-old is having a birthday party and wants to estimate the number of guests. Here's how to make an over-estimate and an under-estimate of the count:

• Over-estimate: Add the number of people who have RSVP'd to the number of people who might show up without having RSVP'd. This gives a higher count because it assumes everyone who RSVP'd will come and that there will be additional guests who show up unannounced.
• Under-estimate: Multiply the number of invitations by the percentage of invitees who are likely not to attend due to illness, prior commitments, etc., and subtract this number from the total number of invitations. This count assumes that not everyone will be able to make it to the party.

These estimates help in preparing for the maximum and minimum number of guests that might attend the party.