The upper class in the 2010 survey had household net worth between $1,345,975 and $7,402,095. Money kept in checking accounts earns no interest but are kept to pay bills. Estimate the mean amount held...

The upper class in the 2010 survey had household net worth between $1,345,975 and $7,402,095. Money kept in checking accounts earns no interest but are kept to pay bills. Estimate the mean amount held in checking accounts by households in the upper class (CHECKING).