pany from a cost standpoint. The last stage of the assembly line packages the shingles before the packages are placed on wooden pallets. The variable of interest is the weight in pounds of the pallet which for most brands holds 16 squares of shingles. The company expects pallets of its "Boston" brand-name shingles to weigh at least 3,050 pounds but less than 3.260 pounds. For the company's "Vermont" brand- name shingles, pallets should weigh at least 3,600 pounds but less than 3,800. Data are collected from a sample of 368 pallets of "Boston" shingles and 330 pallets of "Vermont" shingles and stored in Pallet For the "Boston" shingles, construct a frequency distri- bution and a percentage distribution having eight class intervals, using 3,015. 3,050, 3,085. 3.120, 3,155. 3.190. 3.225. 3.260, and 3,295 as the class boundaries. b. For the "Vermont" shingles, construct a frequency distri- bution and a percentage distribution having seven class intervals, using 3.550, 3.600, 3.650, 3,700, 3.750. 3,800. 3,850, and 3,900 as the class boundaries. c. Construct percentage histograms for the "Boston" shin- gles and for the "Vermont" shingles. d. Comment on the distribution of pallet weights for the "Boston" and "Vermont" shingles. Be sure to identify the percentage of pallets that are underweight and overweight