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An article described an investigation into the coating weights for large pipes resulting from a galvanized coating process. Production standards call for a true average weight of 200 lb per pipe. The accompanying descriptive summary and boxplot are from Minitab. Variable Mean Median TrMean 3+Dev BEMean ctg nt 30 206 .19 206-00 206-81 6.35 1.16 Variable Min Max Q1 Q3 otg ut 193 .00 218 .00 202 .75 212 -00 Coating weight 190 200 210 220 (a) What does the boxplot suggest about the status of the specification for true average coating weight? It appears that the true average weight is not significantly different from the production specification of 200 lb per pipe. It appears that the true average weight is approximately 218 1b per pipe. O It appears that the true average weight is approximately 202 lb per pipe. O It appears that the true average weight could be significantly off from the production specification of 200 lb per pipe. (b) A normal probability plot of the data was quite straight. Use the descriptive output to test the appropriate hypotheses. (Use a = 0.05. You can use (SALT to answer this question.) State the appropriate hypotheses. OH: A = 200 H : A = 200 OH : A = 200 H: A > 200 OH: A = 200 H: A = 200 O Hp: A = 200 H: A