Question

A survey of 100 high school students provided this frequency table on how students get to school: What is the probability that a randomly selected student is a senior or a student who drives to school ?

Answer 1

`(1)/(2)`

Explanation:

P ( senior or drives to school ) = number of seniors or drives to school / total

35 seniors + 40 drivers - 25 seniors who drive = 50

P( senior or drives to school) = number of seniors or drives to school / total

= 50/100

= 1/2