a supervisor wants to know the average number of hours worked by employees in a factory. there are 18…

a supervisor wants to know the average number of hours worked by employees in a factory. there are 18 managers, 240 laborers, and 54 administrators. three managers are chosen to participate in the survey. in order for the sample to accurately represent the population, about how many administrators should be chosen?\no 6\no 9\no 18\no 21

a supervisor wants to know the average number of hours worked by employees in a factory. there are 18 managers, 240 laborers, and 54 administrators. three managers are chosen to participate in the survey. in order for the sample to accurately represent the population, about how many administrators should be chosen?\no 6\no 9\no 18\no 21

Answer

Explanation:

Step1: Calculate the sampling ratio for managers

The ratio of managers chosen to total managers is $\frac{3}{18}=\frac{1}{6}$.

Step2: Apply the ratio to administrators

To find the number of administrators to be chosen, multiply the total number of administrators by the sampling ratio. So, $54\times\frac{1}{6} = 9$.

Answer:

9