NEED R programming language CODE.

NOT THE THIS QUESTION'S SOLUTION. already solved this question.

Thanks a lot.

6.5. A hospital emergency department is monitoring the time required to admit a patient using and R charts. Table 6E.1 presents summary data for 20 subgroups of two patients each (time is in minutes). (a) Use these data to determine the control limits for the T and R control charts for this patient admitting process