A class of 40 students takes a statistics exam. The results are shown in the table at
Question:
A class of 40 students takes a statistics exam. The results are shown in the table at the left. Three students are selected at random. What is the probability that
(a) All three students received an A?
(b) All three students received a C or better?
(c) All three students received a D or an F?
(d) All three students received a B or a C?
Use counting principles to find the probability.
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Related Book For 
Elementary Statistics Picturing The World
ISBN: 9780134683416
7th Edition
Authors: Ron Larson, Betsy Farber
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