Question 209033
useYou are conducting a survey at a college with 800 students, 50 faculty members,
and 150 administrative staff members. Each of these 1,000 individuals has
a single listing in the campus phone directory.
Comment: The numbers do not add up to 1000
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Suppose you were to cut up the directory and pull out one listing at random to contact. 
What is the probability it would be 
(a) a student,------800/1000 = 0.8 
(b) a faculty member,------50/1000 = 1/20 
(c) an administrative staff member,-----150/1000 = 0.15 
(d) a faculty or administrative staff member,----(50+150)/1000 = 1/5((e) anyone except an administrative staff member?-----(1000-150)/1000 = 850/1000= 0.85
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Probability = (# of ways to succeed)/(# of ways to succeed + # of ways to fail)
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Cheers,
Stan H.
Reply to stanbon@comcast.net or use algebra.com response.