The Toronto Fire Department has hired you to generate an accurate estimate of how many homes have operational fire prevention systems.The Chief Fire Inspector gave you a list of two million residential telephone customers in the city.You sampled every two-thousandth address on the list.You survey each sampled household by telephone. How large is your sample?
A)500
B)1000
C)1500
D)2000
E)2500

Question

Quizplus · Accepted Answer

To determine the sample size, we need to divide the population size by the sampling interval, which is 2,000 in this case. 
So, the sample size would be:
2,000,000 / 2,000 = 1,000. 
Therefore, the best choice is B) 1000.

The Toronto Fire Department Has Hired You to Generate an Accurate