A. what is the probability that the port handles less than million tons of cargo per week (to 4 decimals) ?

The probability that the port handles less than 5 million of cargo per week is 0.7291The probability that the port handles 3 or more million tons of cargo per week is 0.9664The probability that the port handles between 3 million and 4 million tons of cargo per week is 0.2373

There are three probability in each million cargo that you wish to know. The probability in less than 5 million cargo per week is 0.7291 while 3 or more million tons of cargo and 3 million and 4 million tons of cargo per week is 0.9664 and 0.2373 respectively.