Can I please have help on the following problem?

The following are response times for customer service. Requirements are 10.50 to 10.90. Annual volume is 600,000. Each "trad\" one cost $1 2. Use the table below to comment on the process. The control limits for ranges are closest to the following Ellis madam Rm Average ( l'h 10.05 10.?0 10.05 103] 10 0.15 l IEE-I 10.00 10.?0 10.00 10.00 10.05 0.10 1 10.?0 10.?5 10.?0 10.00 10.?0 0.11: E 10.00 10.?5 10.?0 10.00 10.?1 0.10 10.?5 10.00 10.05 10.?5 10.?11 0.15 : m 10.00 10.?5 10.00 10.?5 10.?3 0.20 i ___IEIEEI-E! I 10.05 10.?0 10.?5 10.00 10.00 0.10 5 ___Imam l __IEE-I___ ; mm .... ....- : 10.?5 10.00 10.?5 10.01 10.00 0.15 = ___M 3 Him.0130 ; mm : 10.05 10.05 10.00 10.E[| 10.?0 0.20 _________________________________________________________________ Averaj 10.?0 0.1? .30an00 10.03 and 10.50 9.03 and .1 1.50 None of the above