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Answer to the following questionsSampling methodsIn Excel, generate three simple random sample from the database (BDD-ex1) of 5 % (S1), 15% (S2) and 25% (S3). Copy each sample in S1, S2 and S3. /3For the variable income, calculate the mean, in your population and in the samples. /1How large for your sample is enough for a good prediction of the mean income in the population. /1The larger the sample the better. Therefore, sample n=500 with largest means of 1765.188 is ideal for a good prediction of incomePopulationSample1Sample2Sample3frequencies2000100300500Mean15121382.061483.131765.188This table presents the structure of a population according to their social class and their age. Create a quota sample for a sample size of 2000. /2QUOTA SAMPLEAge20-30 years30-4040-5050Social classLower cl...
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