students preparing to take the AP exam. Though they were obviously not a random
ID: 3226036 • Letter: S
Question
students preparing to take the AP exam. Though they were obviously not a random sample, he considered his students to be "typical" of all the national students. What's the probability that his students will achieve an average score of at least 3?
Score Percent of Students
5 12.5
4 22.7
3 25.7
2 17.7
1 21.4
The score distribution shown in the table is for all students who took a yearly AP statistics exam. An AP statistics teacher had 5151students preparing to take the AP exam. Though they were obviously not a random sample, he considered his students to be "typical" of all the national students. What's the probability that his students will achieve an average score of at least 3?
Score Percent of Students
5 12.5
4 22.7
3 25.7
2 17.7
1 21.4
Explanation / Answer
P(at least 3) = P(3) + P(4) + P(5)
= 0.257 + 0.227 + 0.125
= 0.609
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