A researcher wishes to estimate the number of households with two cars. how large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 5%? a previous study indicates that the proportion of households with two cars is 24%

n = 2553

According to one source, the answer to this question is by determining the sample size of the given values. W hen encountered with questions that relate on how large a sample should yield a significant result is answered by determining the sample size. The sample size is the determination of how much sample is needed for the study to reveal confidence levels of 95% or higher.