Buderim Bottling has over 1,000 employees at its main factory. In investigating a proposal to open a fitness centre at the factory, the company randomly sampled and interviewed 50 employees. For this study, the mean number of hours that these 50employees exercised last week is a____

a.

population.

b.

sample.

c.

statistic.

d.

parameter.

e.

none of the above.