2013, Question 3 · 4 points
Weights of egg cartons
Find a normal probability for a carton's weight, then work out the mean and standard deviation of a single egg's weight from the carton and container information.
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.
Not in the current course. Part (b) relies on combining independent random variables, which the current course no longer includes.
Lessons this question draws on
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Scoring guidelines (PDF, page 8) What the exam readers saw (Student Performance Q&A)
Question, scoring guidelines and Chief Reader report: College Board, from the Internet Archive. The title, summary are ours.