Question: Problem 10.21 The following data were obtained in a comparative study of a remote pro[1]cedure call (RPC) on two computer operating systems, UNIX and ARGUS.

Problem 10.21 The following data were obtained in a comparative study of a remote pro[1]cedure call (RPC) on two computer operating systems, UNIX and ARGUS.

UNIX ARGUS DATA BYTES TIME DATA BYTES TIME 64 26.4 92 32.8 64 26.4 92 34.2 64 26.4 92 32.4 64 26.2 92 34.4 234 33.8 348 41.4 590 41.6 604 51.2 846 50.0 860 76.0 1060 48.4 1074 80.8 1082 49.0 1074 79.8 1088 42.0 1088 58.6 1088 41.8 1088 57.6 1088 41.8 1088 59.8 1088 42.0 1088 57.4

(Source: R. Jain (1991), The Art of Computer Systems Performance Analysis, John Wiley & Sons. Used with permission.)

(a) Draw the scatter plot for Model (Y = time |X = data bytes) (UNIX DATA).

(b) Display the results of the regression analysis in the format of Table 10.5.

(c) What proportion of the variability is explained by the model?

(d) Compute 95% confidence intervals for the regression coefficients. Save your computations.

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