An oil company stores gasoline in five different types of tanks A, B, C, D, and E. The data on the storage capacities (in millions of gallons) of the tanks of type A, B, C, D, and E and the available number of tanks of each type are as follows: Storage capacity: 54.3 83.4 78.5 65.4 41.4. œ ß œ ß œ ß œ ß œ " % & $# Number of available tanks of each type: 538, 894, 727, 632, and 478. Assume A œ A œ A œ A œ A œ " # $ % & that all the tanks are filled to the capacity, and calculate the mean, variance, and standard deviation of the quantity stored in the tanks.