In a comparison between the mean waiting times of the customers in two different branches for Fast – Food the manager selected 60 customers from first branch and their mean waiting time was 30 minutes...

In a comparison between the mean waiting times of the customers in two different branches for Fast – Food the manager selected 60 customers from first branch and their mean waiting time was 30 minutes and the previous reports showed that the variance was 16 minutes². Also a sample consist of 50 customers from second branch was selected and their mean waiting time of this sample was 15 minutes and from previous reports the variance was 25 minutes². Compute 95% confidence interval for the difference between the two means.

What is the tabulated value

What is the S.E value

What Is the lower and upper bound