Question

Level L>X.15 Find probabilities using the addition rule UKVYou have prizes to reveal! Go to yourOver a weekend, Sue counted the number of single scoop ice creams ordered at her store.She tracked the flavors and the day on which it was ordered.The probability that an ice cream was vanilla is 0.85, the probability that it was ordered on aSunday is 0.96, and the probability that it was vanilla and was ordered on a Sunday is 0.82.What is the probability that a randomly chosen ice cream was vanilla or was ordered on aSunday?od.HESIouSubmit

Answer 1

We have the following data:

P(V) = 0.85

P(S) = 0.96

P(V and S) = 0.82

We can use the rules of addition to find P(V or S) as:

`\begin{gathered} P(V\cup S)=P(V)+P(S)-P(V\cap S) \\ P(V\cup S)=0.85+0.96-0.82 \\ P(V\cup S)=0.99 \end{gathered}`

Answer: The probability that a randomly chosen ice cream was vanilla or was ordered on a Sunday is 0.99.