Answer :
Final answer:
The sample proportion of students who don't participate in senior skip day is 0.15, which represents 15% of students.
Explanation:
The question asks for the sample proportion of students who don't participate in senior skip day. If 85 percent of students attend their graduation, then 15 percent of students don't attend. For the sample proportion, you can convert this percentage into a decimal to get the proportion of students not participating. The answer would be 0.15, which is option a). Therefore, the sample proportion of students who don't participate in senior skip day is 15% (option a).
