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 ( Round your answers to three decimal places)   b.  Make a histogram for the probability distribution of part a c.  What is the expected number of parolees in Alices's group who will not be repeat offenders? what is the standard deviation ( Round your answer to two decimal places) d. What is the smallest group Alice can counsel to be at least 98% sure that three or more parolees will not become repeat offenders

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.