Z statistic value for 90% confidence limits is 1.645
lower limit= x-s*Z/(n)^0.5
upper limit= x+s*Z/(n)^0.5
hello - it was 2 parts to this queston. 90% and 95%. What is the answer for 95%?
hmmm they said the answer was wrong.
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?