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i need help with question 13.3 a&b

13.3 For the code size data of Table 11.2, find the confidence intervals for the average code sizes on various processors. Choose any two processors and answer the following: a. At what level of significance can you say that one is better than the other? b. How many workloads would you need to decide the superiority at 90% confidence?
TABLE 11.2 Raw Data for the Code Size Comparison Study Processor Benchmark RISC-I 78002 VAX-11/780 PDP-11/70 C/70 E-String Search F-Bit Test H-Linked List K-Bit Matrix I-Quick Sort Ackermann(3,6) Recursive Qsort Puzzle (Subscript) Puzzle (Pointer) SED (Batch Editor) Towers Hanoi (18) Sum Average 140 120 176 288 992 144 2,736 2,796 752 17,720 96 25,960 2,360 126 180 141 374 1,091 302 1,368 1,398 602 17,720 240 23,542 2,140.18 98 144 211 288 893 72 1,368 1,398 451 10,632 12 98 168 120 99 141 374 317 ,091 893 86 86 1,642 1,642 398 1,678 376 376 8,860 8,860 96 67 4,502 14,278 1,318.36 1,298 15,632 1,421.09
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