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The mean and standard deviation of the net contribution to the charity in 1,000 plays of the game are $700 and $92.79, respectively. Use the normal distribution to approximate the probability that the charity would obtain a net contribution of at least $500 in 1,000 plays of the game. © 2012 The College Board.
Intent of Question. The primary goals of this question were to assess students’ ability to (1) perform calculations and compute expected values related to a discrete probability distribution; (2) implement a normal approximation based on the central limit theorem.
The free-response section of the AP Stats exam tests your ability to apply your knowledge of a variety of areas in statistics, including expected value, v ...more. This video helps students...
Statistics Practice Exam From the 2012 Administration • This practice exam is provided by the College Board for AP Exam preparation. • Exams may not be posted on school or personal websites, nor electronically redistributed for any reason. • Teachers are permitted to download the materials and make copies to use with the
Download free-response questions from past AP Statistics exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions.
(b) What is the expected value of the net contribution to the charity for one play of the game? (c) The charity would like to receive a net contribution of $500 from this game. What is the fewest number of
The conditions for applying a two-sample -procedure are: The data come from independent random samples or from random assignment to two groups; The populations are normally distributed, or both sample sizes are large; The population sizes are at least 10 (or 20) times the sample sizes.
