Shown below are the top 10 contractors of the U.S. federal government by dollars according to the U.S. General Services Administration. Use this population data to compute a mean and a standard deviation for these data. Company Amount of Contracts ($ billions) 50.7 Lockheed Martin Boeing 23.4 General Dynamics 15.3 Raytheon 14.7 Northrop Grumman 11.2 McKesson 8.8 Huntington Ingalls Industries 7.2 Bechtel 5.5 BAE Systems 5.3 L3 Technologies 5.2 Raytheon 14.7 Northrop Grumman 11.2 McKesson 8.8 Huntington Ingalls Industries 7.2 Bechtel 5.5 BAE Systems 5.3 L3 Technologies 5.2 (Round your answers to 2 decimal places.) Mean = Standard deviation =