USA Today reports that about 25% of all prison parolees become repeat offenders. Alice is a social
Question:
USA Today reports that about 25% of all prison parolees become repeat offenders. Alice is a social worker whose job is to counsel people on parole. Let us say success means a person does not become a repeat offender. Alice has been given a group of four parolees.
(a) Find the probability P(r) of r successes ranging from 0 to 4.
(b) Make a histogram for the probability distribution of part (a).
(c) What is the expected number of parolees in Alice's group who will not be repeat offenders? What is the standard deviation?
(d) How large a group should Alice counsel to be about 98% sure that three or more parolees will not become repeat offenders?
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a Since success not a repeat offender then p 075 b c np 4075 3 We expect three ...View the full answer
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Related Book For 
Understandable Statistics Concepts And Methods
ISBN: 9781337119917
12th Edition
Authors: Charles Henry Brase, Corrinne Pellillo Brase
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