Question

A survey of 100 high school students provided this

frequency table on how students get to school:
Drive to
Take the
Grade
Walk
School
bus
Sophomore
2
25
3
Junior
13
20
2
Senior
25
5
5
Find the probability that a randomly selected student
either takes the bus or walks.
?
P(Take the bus U Walk)
=
Remember to reduce your answer.

Answer 1

• P(Take the bus U Walk) =3/5

Explanation:

According to table we can find that

Number of students taking the bus:

• 25 + 20 + 5 = 50

Number of students walking to school:

• 3 + 2 + 5 = 10

Number of students either take the bus or walk:

• 50 + 10 = 60

Required probability is:

• P(Take the bus U Walk) =
• (number of students either take the bus or walk) / (total number of students) =
• 60/100 =
• 3/5