The university data center has two main computers. The center wants to examine whether computer 1is receiving tasks that require processing times comparable to those of computer 2. A random sample of 13processing times from computer 1showed a mean of 59seconds with a standard deviation of 18seconds, while a random sample of 11processing times from computer 2(chosen independently of those for computer 1) showed a mean of 58seconds with a standard deviation of19 seconds. Assume that the populations of processing times are normally distributed for each of the two computers and that the variances are equal. Construct a90% confidence interval for the differencebetween the mean processing time of computer 1, mean 1and the mean processing time of computer 2, mean 2. Then complete the table below.

Carry your intermediate computations to at least three decimal places. Round your responses to at least two decimal places. (If necessary, consult alist of formulas.)