FINAL PROJECT SURVEY By: Anita Robbins and edited by Dr. Warner HOW MANY INMATES WILL RETURN BACK TO JAIL AFTER BEING RELEASED FROM THE PROGRAM?

The first step was to find a small sample of data, so I asked a few inmates in the program, “Do you think that you will return back to jail after being released?

After speaking with 20 inmates, I asked 20 of them how many will return back to jail? 4 stated Yes they will return 16 stated no they won’t return

After my mini sample with the inmates , 80% said NO – p-hat is After my mini sample with the inmates , 80% said NO – p-hat is .80 12% said YES – q-hat is .20

I chose this CONFIDENCE LEVEL 95% Za\2=1.96

P-hat ( NO) is. 80 and q-hat (Yes) is P-hat ( NO) is .80 and q-hat (Yes) is .20 I will use these in the preliminary study in order to find the margin of error and sample size E = 2.5 (Computed using the formula for E) Sample size needed is 984 (computed using formula for n)

As the second part of the study: I had co-workers go interview 1000 inmates to see where their mind set was as it relates to being rearrested .

DATA COLLECTED From 1000 inmates 646 Said NO – that is 64 DATA COLLECTED From 1000 inmates 646 Said NO – that is 64.6 % 354 SAID YES – that is 35.4 %

IT LOOKS AS IF MANY inmates WERE NOT INTERESTed IN RETURNING BACK TO JAIL, APPROXIMATELY 64.6% STATED THEY WILL NOT RETURN.

The Confidence interval for the number who would return is: 61 The Confidence interval for the number who would return is: 61.6 < p < 67.6 (61.6, 67.6) I found this using STAT – TESTS – 1-PropZint in my calculator