Commodities shipped by rail. The following table extracted fromRailway Age (May

Commodities shipped by rail. The following table extracted fromRailway Age (May 1999) lists the number of carloads of differenttypes of commodities that were shipped by the major U.S. railroadsduring a week. Suppose the computer record for a carload shippedduring the week is randomly selected from a masterfile of allcarloads shipped that week and the commodity type shipped isidentified.