City officials were considering the average number of residents per household in a single district. 24 households were surveyed and it was found that the average population per household was 2.7 and the standard deviation was 2.6. a) Find out the range of the population per household based on 90% security. Assume normal distribution. To improve the accuracy of the study, the city authorities decided to expand the sample to 250 homes. The survey showed that the average population per household was 2.5 and the standard deviation was 1.6. b) In what range is the population per household based on 90% security based on this new information?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.