2004, Form B, Question 3 · 4 points
Ore weights in hopper cars
Find the normal probability that one car or the mean of 10 cars reaches 70.7 tons, and use each result to judge whether the loader is overfilling.
This exam had six free-response questions, each scored from 0 to 4. Its Question 6, the Investigative Task, is no longer part of the exam. The current exam has 4 free-response questions in 90 minutes. The skills these questions practice still count.
Lessons this question draws on
1 Read the question
The question is College Board's, from the 2004, Form B exam. It starts on page 7 of the PDF. College Board no longer posts this exam, so it opens from the copy of College Board's PDF that the Internet Archive saved on April 5, 2025.
2 Write your answer
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3 Score it
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Scoring guidelines (PDF, page 6)
Question, scoring guidelines and Chief Reader report: College Board, from the Internet Archive. The title and summary are ours.