SOLUTION: We are going to have an outdoor birthday party for Amber. We figure 25 people will attend if it rains and 70 people will attend if it does not rain. The weather forecast indicates

Question 1118768: We are going to have an outdoor birthday party for Amber. We figure 25 people will attend if it rains and 70 people will attend if it does not rain. The weather forecast indicates that there is a 20% chance of rain that day. What is the expected number of people who will attend the party?
Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!

Assuming a linear relationship between the percent chance for rain and the number of attendees, the number is 20% of the way from 70 (0% chance) to 25 (100% chance).

The expected number of people with a 20% chance of rain would be 61.
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