Answer:
The probability that a randomly selected social robot is designed with legs or without wheels is 0.72
Step-by-step explanation:
The Complement Rule states that the sum of the probabilities of an event and its complement must equal 1. To get the probability equally likely we use the following formula
P=# of possibilities that meet the condition / #of equally likely possibilities.
Our condition is that a randomly selected social robot is designed with legs or without wheels. Then, the data that meet my condition is 65 robots were built with legs only +15 robots were built with neither legs nor wheels.
#of equally likely possibilities is the total number of robots
P=# of possibilities that meet the condition / #of equally likely possibilities.
P= (65+15)/110
P= 80/110=0,7272
