A city has 50,000 residents. A survey was conducted to estimate the number of residents who use public transportation daily. A random sample of 500 residents was selected, and of them reported using public transportation daily. Based on this survey, the best estimate for the total number of residents who use public transportation daily is . Which of the following statements best explains why this is considered a reliable estimate?
The sample size of 500 residents is a large number.
The residents were selected at random, making the sample representative of the population.
The percentage of residents using public transportation () is a relatively small number.
The calculation is straightforward.
