One question! Will give medal!

In a sample of 60 households, the mean number of cups of milk drank in June was 82. In a much larger study, the standard deviation was determined to be 68. For the following questions, assume the population standard deviation is the same.
Margin of Error=1.96 *o/√ ̅ n
o= the population standard deviation and n= the sample size

1.) Solve for the 95% confidence interval for the mean cups of milk drank in June? Please show all work and explain your steps.

Question

One question! Will give medal!

In a sample of 60 households, the mean number of cups of milk drank in June was 82. In a much larger study, the standard deviation was determined to be 68.   For the following questions, assume the population standard deviation is the same.
Margin of Error=1.96 *o/√ ̅ n 
o= the population standard deviation and n= the sample size

1.)  Solve for the 95% confidence interval for the mean cups of milk drank in June?  Please show all work and explain your steps.