Z score math | Mathematics homework help


 CJ 301


Assignment #5






–Please acceptance each of the forthcoming questions. Also, INTERPRET your acceptances.


You must use the exhortation for this week conjuncture agoing on this assignment


– Z reckoning module – underneathneath the Learning Modules. (Also, use the Z reckoning consideration).





 *20 points total




YOUR NAME: _______________________________________________






  1. A narrate function of corrections has a cunning whereby it accepts as correctional officers barely those who reckoning in the top 5 % of a qualifying exam. (4 points)




The balance of this experiment is 80.


Standard rupture is 10.






Would a idiosyncratic after a while a raw reckoning of 95 be true?


         (Calculate a Z reckoning: reckoning – balance/st.dev.=   )














  1. Given a usual division of raw reckonings after a while a balance of 60 and a rule rupture of 10, what dispensation of cases fall:




  1. between a raw reckoning of 40 and 80? (3 points)





  2. between a raw reckoning of 45 and 50? (3 points)






  1. Find the z-reckoning corresponding to a raw reckoning of 90 from a usual division after a while balance 60 and rule rupture 8. (2 points)










  1. For a usual division where the balance is 50 and the rule rupture is 8, what is the area :






  • Between the reckonings of 30 and 65? (2 points)




    5. Assume that the division of a seed-plot inlet exam is usual after a while a balance of 500 and a rule rupture of 100. For each reckoning under, find the equipollent Z reckoning, the percentage of the area overhead the reckoning, and the percentage of the area under the reckoning. (3 + 3 points)


    Score                            Z reckoning                    % Area Above         % Area Below


    a) 375



    b) 437