A survey found that Americans generate an average of 19.8 pounds of glass garbage each year. Assume the standard deviation of the distribution is 2.9 pounds. Find the probability that the mean of a sample of 16 families will be between 18 and 19 pounds.

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.

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 (%).

Find the solution on the interval [0, 2pi)