A bank manager wants to know the mean amount of mortgage paid per month by homeowners in an areaA random sample of 116 homeowners selected from this area showed that they pay an average of $15 per...

A bank manager wants to know the mean amount of mortgage paid per month by homeowners in an areaA random sample of 116 homeowners selected from this area showed that they pay an average of $15 per month for their mortgages. The population standard deviation of such mortgages is $207 Find a 97 % confidence interval for the mean amount of mortgage paid per month by all homeowners in this area.