The ages of 10 tourists visiting the Kakum National Park at Cape Coast are 32, VV,60, 47, 54, 17, 72, 55,33 and 41. Assuming the data are from a normal distributiori with known population standard deviation of 17 years, use this information to construct the 95% confidence interval on the population mean.

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 (%).