A random sample of 108 light bulbs had a mean life of
Thank you for the opportunity to help you with your question!
90 % C.I. for μ = xbar+/- Margin of error
margin of error= zσ/sqrt(n)= 1.645*36/sqrt(108)=5.7477
90 % C.I. for μ = (547 - 5.7,547+5.7)=( 541, 553 )
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?