Answer 17,19 neatly and briefly.

for upvote please answer correctly.

19. One analyst want to conduct a work sampling to estimate the idle time of a worker in an assembly line. The study will cover 60 days and we know the worker is working 8 hours a day. The analyst wants to make 10 observations, please make a schedule based on the following random number table, please give the detail how you generate each observation point. (4 points) 2 3 5 1 2 3 4 6912 3491 4715 1632 7264 1192 2486 1546 7209 4627 2093 3856 1123 5 8510 8901 7547 2664 1844 2376 6083 8511 0249 3761 0120 2108 8387 4617 0064 1908 4237 2044 3957 8818 9207 6 2801 0575 2776 1950 0938 7343 0521 7354 9912 9585 2768 4359 1328 7 3956 7728 8 3950 7871 2716 2935 8533 0508 2951 9 10 4028 7752 1396 8259 957 1640 0131 2159 9530 11 4666 3095 3352 3018 12 4421 Answer: 17. There are some tasks and their sequence shown in the following figure. Please assign the tasks in order of the greatest number of followers with a cycle time of 1.2 minute. (4 points) 0.2 min 10 min 04 min 07 min 0.6 m 05 min