Please use R codes for all the problems except 8.2 and send
Please use R codes for all the problems except 8.2 and send me the codes, and also make a clean report and send. Problem 8.1 Brewer’s malt is produced from germinating barley, so brewers like toknow under what conditions they should germinate their barley. The following is part of an experiment on barley germination. Barley seeds weredivided into 30 lots of 100 seeds, and each lot of 100 seeds was germinatedunder one of ten conditions chosen at random. The conditions are the tencombinations of weeks after harvest (1, 3, 6, 9, or 12 weeks) and amountof water used in germination (4 ml or 8 ml). The response is the number ofseeds germinating. We are interested in whether timing and/or amount of water affect germination. The data for this problem are in Table 8.1 (Harelandand Madson 1989). Analyze these data to determine how the germinationrate depends on the treatments.Problem 8.2 (For this problem, no calculation, no R, simple tell me whats wrong with this design)Particleboard is made from wood chips and resins. An experiment isconducted to study the effect of using slash chips (waste wood chips) alongwith standard chips. The researchers make eighteen boards by varying thetarget density (42 or 48 lb/ft3), the amount of resin (6, 9, or 12%), and thefraction of slash (0, 25, or 50%). The response is the actual density of theboards produced (lb/ft3, data from Boehner 1975). Analyze these data todetermine the effects of the factors on particleboard density and how thedensity differs from target.Problem 8.4Implantable heart pacemakers contain small circuit boards called substrates. These substrates are assembled, cut to shape, and fired. Some ofthe substrates will separate, or delaminate, making them useless. The purpose of this experiment was to study the effects of three factors on the rateof delamination. The factors were A: firing profile time, 8 versus 13 hourswith the theory suggesting 13 hours is better; B: furnace airflow, low versushigh, with theory suggesting high is better; and C: laser, old versus new, withtheory suggesting new cutting lasers are better.A large number of raw, assembled substrates are divided into sixteengroups. These sixteen groups are assigned at random to the eight factorlevel combinations of the three factors, two groups per combination. Thesubstrates are then processed, and the response is the fraction of substratesthat delaminate. Data from Todd KerkowAnalyze these data to determine how the treatments affect delamination.
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