Preaching about the proportion of the unemployed in one city. That estimate by sampling, the number of working age population of 400 people found 40 people who are unemployed will be whether the estimated proportion is.
Go approximately proportion of the unemployed in a city. The estimated population of working age by sampling of 400 people found that there are 40 people who are unemployed. It estimates that the proportion is.
And about the proportion of the unemployed in the city of one. The population was estimated by sampling among working 400 people found 40 the ผู้ว่างงาน. Is that the ratio is about