Please round answers to 3 decimal points

The built-in data set, UKgas, is a time series recording the quarterly UK gas consumption from 1960 to 1986. Using R we can convert this data into the vector x by the assignment x30 we can create a confidence interval for / using a normal critical value. If we want the confidence interval to be at the 96% level and we use a normal critical value, then what critical value should we use? i) Calculate a 96% confidence interval(using a normal critical value) for u. j) How long is the 96% confidence interval just created in part i? k) Copy your R script for the above into the text box here