Annual salary plus bonus data for chief executive officers are presented in the businessweek annual pay survey. a preliminary sample showed that the standard deviation is $675 with data provided in thousands of dollars. how many chief executive officers should be in a sample if we want to estimate the population mean annual salary plus bonus with a margin of error of $100,000? (note: the desired margin of error would be e=100 if the data are in thousands of dollars.) use 95% confidence.