Question

Brad is testing whether school is more enjoyable when students are making high grades. He asked 110 students if they enjoyed school and whether their GPA was above or below 3.5. He found that 38 of the 45 students with a GPA above 3.5 reported that they enjoyed school, and 7 of the 65 students with a GPA below 3.5 reported that they enjoyed school. What is the probability that a student with a GPA below 3.5 does not enjoy school?

A 89%
B 92%
C 85%
D 75%

Answer 1

yeeee bb

Answer 2

@mathmale

Answer 3

58 out of 65

Answer 4

since only 7 of them enjoy school

Answer 5

suspend ^^ direct answers >:(

Answer 6

so 58 divided by 65

Answer 7

idk how thats giving direct answers lol

Answer 8

This problem calls for a 2-way table, sometimes referred to as a conditional probability table. Note that the grand total number of students is 110. could you set up the appropriate table?

Answer 9

oh yeah i just did he 2 way table thingy

Answer 10

On one side of the table, you could write in "enjoy school" and "not enjoy school;"
on another side (top edge), you could write "GPA above 3.5" and "GPA below 3.5".
This will create 2 rows (plus a sum column) and 2 columns (plus a sum row). Steal the appropriate numbers from the problem statement and put them into the table.