How do you calculate a z-score?

Related questions

• What does a z-test measure?
• What type(s) of distributions can a z-test be applied to?
• 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= 70#, SD = 1, and X =75?
• 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?