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I don’t know how to handle this Supply Chain question and need guidance.QUESTION 1How 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 $5000 4025451953206764
1.5 points QUESTION 2How 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
1.5 points QUESTION 3Based on your sampling frame, we estimate 30% of individuals do not qualify for your study and only 80% will complete the survey. In order to reach 5000 target samples, how many samples should be included initially?5000750089299105
1 points QUESTION 4There 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
Requirements: just answer it   |   .doc file


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