When a student is selected at random from a population of high school students, the

probability the student has a smartphone is. 71, the probability the student has a tablet is

.28 and the probability the student has both is. 13. What is the probability a student has a tablet given they have a smartphone. Round to the nearest percent

Pr (tablet given smartphone) = 18%

Step-by-step explanation:

Let:

probability that the student has a smartphone = Pr (smart phone)

Pr (smart phone) = 0.71

the probability that the student has a tablet = Pr (tablet)

Pr (tablet) = 0.28

the probability the student has both = Pr (both)

Pr (both) = 0.13

the probability a student has a tablet given they have a smartphone = Pr (tablet given smartphone)

Pr (tablet given smartphone) = Pr (tablet & smartphone) / Pr (smart phone)

Pr (tablet given smartphone) = 0.13/0.71

Pr (tablet given smartphone) = 0.183 = 18.3%

Pr (tablet given smartphone) = 18%