In selecting the sample size to estimate the population proportion p,if we have no knowledge of even the approximate values of the sample proportion ,we:
A)take another sample and estimate .
B)take two more samples and find the average of their .
C)let = 0.50.
D)let = 0)95.

Question

In selecting the sample size to estimate the population proportion p,if we have no knowledge of even the approximate values of the sample proportion  ,we:
A)take another sample and estimate . 
B)take two more samples and find the average of their . 
C)let = 0.50. 
D)let = 0)95.

Quizplus · Accepted Answer

If we have no knowledge of the approximate values of the sample proportion, the best strategy is to assume a worst-case scenario and take the proportion to be 0.50 (i.e., equal chance of success and failure). This ensures that the sample size we choose will be large enough to get a reasonable estimate of the population proportion, regardless of its actual value. Option C suggests this approach and is therefore the best choice. The other options may involve unnecessary sampling and may not provide a better estimate than option C.

In Selecting the Sample Size to Estimate the Population Proportion