a. confidence interval = 92 + or - 0.782

b. confidence interval = 92 + or - 2.442

Explanation: calculate t alpha/2 x s/sq. rt (n). this gives the deviation fro the mean.

Need better explanation

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