Question

Wendy wanted to understand whether students at her school were in favor of an extended school day. She surveyed some students and displayed the results in the table below: In favor Opposed Undecided Grade 9 4 7 7 Grade 10 9 11 5 Grade 11 12 13 5 Grade 12 10 5 12 If the principal randomly selects a student in grade 12 from this survey, what is the probability that the student is in favor of extending the school day

Answer 1

In favor Opposed Undecided Total
Grade 9 4 7 7 18
Grade 10 9 11 5 25
Grade 11 12 13 5 30
Grade 12 10 5 12 27
Total 35 36 29 100

If the principal randomly selects a student in grade 12 from this survey, the probability that the student is in favor of extending the school day is 0.10 or 10%

Grade 12 and In favor is 10.
Total population is 100.

10/100 = 0.10
0.10 x 100% = 10%