You are comparing the heights of contemporary males at 18th century males. the sample mean for a sample of 30 contemporary males is 70.1 in with a sample standard deviation of 2.52 in the sample mean for the 18th century males was 65.2 in with a sample standard deviation of 3.51 in is there sufficient data to conclude that contemporary males are taller than 18th century males

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).