P(-1<Z<+1)

According to the standard normal distribution table

P(z<1)=0.84134

P(z<-1)=0.15866

So P(-1<z<1)=0.84134-0.15866=0.68268

Secure Information

Content will be erased after question is completed.

Enter the email address associated with your account, and we will email you a link to reset your password.

Forgot your password?

Sign Up