A survey asked students whether they have any siblings and pets. The survey data are shown in the relative frequency table.
Total
Siblings
0.3
No siblings
0.15
Pets
0.45
No pets
0.45
0.1
0.55
Total
0.75
0.25
1.0
Given that a student has a sibling, what is the likelihood that he or she does
not have a pet?
A. 40%
B. 45%
C. 60%
D. About 82%
Need help