What is the z-score of X, if n = 135, #mu= 70#, SD = 1, and X =75? Statistics Inference with the z and t Distributions One-sample z test 1 Answer BeeFree Nov 29, 2015 z-score = 58.1 Explanation: #z=(75-70)/(1/sqrt135)=58.1# hope that helped Answer link Related questions What does a z-test measure? What type(s) of distributions can a z-test be applied to? How do you calculate a z-score? What is the z-score of X, if n = 25, #mu= 60#, SD = 12, and X =58? What is the z-score of X, if n = 135, #mu= 74#, SD =3, and X =73? What is the z-score of X, if n = 4, #mu= 60#, SD =3, and X =60? What is the z-score of X, if n = 3, #mu= 55#, SD =2, and X =56? What is the z-score of X, if n = 57, #mu= 35#, SD =5, and X =13? What is the z-score of X, if n = 72, #mu= 137#, SD =25, and X =13? What is the z-score of X, if n = 204, #mu= 15#, SD =1, and X =35? See all questions in One-sample z test Impact of this question 3061 views around the world You can reuse this answer Creative Commons License