The tree diagram below shows the distribution of cars sold and whether each type got upgrades or not. Find the Probability of a random car getting an upgrade.
To find the probability of a random car getting an upgrade, we can add up the probabilities of each outcome where the car gets an upgrade.
Let's first identify the possible outcomes where a car gets an upgrade:
1. Sedan with upgrade: 0.3
2. Sedan without upgrade: 0.1
3. SUV with upgrade: 0.2
4. SUV without upgrade: 0.4
Add up the probabilities of the outcomes where the car gets an upgrade:
0.3 (Sedan with upgrade) + 0.2 (SUV with upgrade) = 0.5
Therefore, the probability of a random car getting an upgrade is 0.5 or 50%.