In general, if companies with thousands of employees want to
determine the average number of days of work missed per employee
due to illness during a year for its employee population, it would
___.
a compute the average for each employee in the population and
then take the average
b calculate the population mean using the data for the employee
population
c estimate the population mean using the mean of a random sample
of employees
d estimate the proportion of days missed by each worker in the
population and then multiply it by the number of days in a year