1.5 points 1.5 points 1 points
Requirements: just answer it
How many samples should you collect if I want to know the average first salary after graduation in 2020 from college with the level of precision ± $100 and 90 percent confidence level? Assume the average first salary in 2019 is $50000 with a standard deviation of $50004025451953206764 How many samples should you collect if I want to know the percentage of residents who have/had COVID-19 with a 99 percent confidence level and 1% precision? Use 0.5 as the default proportion.16588175211585220510 Based on your sampling frame we estimate 30% of individuals do not qualify for your study and only 80% will complete the survey. In to reach 5000 target samples how many samples should be included initially?5000750089299105 There are 60% of individuals in our target population are iPhone users. We are conducting research on cellphone usage. Based on stratified sampling how many non-iPhone users samples should we collect if we plan to collect 500 total samples?100200300400 How many samples should you collect if I want to know the average first salary after graduation in 2020 from college with the level of precision ± $100 and 90 percent confidence level? Assume the average first salary in 2019 is $50000 with a standard deviation of $50004025451953206764 How many samples should you collect if I want to know the percentage of residents who have/had COVID-19 with a 99 percent confidence level and 1% precision? Use 0.5 as the default proportion.16588175211585220510 Based on your sampling frame we estimate 30% of individuals do not qualify for your study and only 80% will complete the survey. In to reach 5000 target samples how many samples should be included initially?5000750089299105 There are 60% of individuals in our target population are iPhone users. We are conducting research on cellphone usage. Based on stratified sampling how many non-iPhone users samples should we collect if we plan to collect 500 total samples?100200300400
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