Question

A company wants to determine a confidence interval for the average cPU time of its teleprocessing transactions. A sample of 70 random transactions in milliseconds is given below. Assume that the transaction times follow a normal distribution milliseconds. use with a standard deviation of 6oo Excel to determine a 98% confidence interval for the average CPU time in milliseconds. Round your answers to the nearest integer and use asdending order. Time 6690 6160 5140 7210 5570 7320 5190 5770 8390 6730 6820 5340 6690 5560 6680 5670 6650 6180 5570 5410 6160 6600 6910 6400 4960 5660 6360 5760 6270 6810 5660 90 60 10 70 30 90 20 10 60 10 70 10 00 60 60 60 60

Answer 1

The 98% confidence interval for the average CPU time in milliseconds is (5010, 7270).