Question

The following two-way table describes student's after school activities. Find the probability that a randomly selected student either does sports or works. Grade Sports Music/Drama Work Sophomore 20 7 3 Junior 20 13 2 2 Senior 25 5 un P(Sports U Work) = [?] Round to the nearest hundredth.

Answer 1

P = 0.75

Step-by-step explanation:

The probability that a student either does sports or works can be calculated as the number of students that do sports or work divided by the total number of students.

So, taking into account the table, the number of students that do sports is:

Sports = 20 + 20 + 25 = 65

The number of students that work is:

Work = 3 + 2 + 5 = 10

The total number of students is:

Total = 20 + 20 + 25 + 7 + 13 + 5 + 3 + 2 + 5

Total = 100

Therefore, the probability is equal to:

`P=(65+10)/(100)=(75)/(100)=0.75`

So, the answer is 0.75