# Question

What is a frame? What is its role in sampling?

## Answer to relevant Questions

a. What is a random sample? b. Why is a random sample approximately representative? c. What is the difference between a random sample selected with and one selected without replacement? d. What is a table of random digits? ...Your automatic transmission factory has had some problems with quality. You have decided to gather information from tomorrow’s production for careful evaluation. For each of the following sampling methods, say if the ...You have a factory with 40 production machines that are essentially identical, each producing at a mean daily rate of 100 products with a standard deviation of 15. You may assume that they produce independently of one ...Consider an election poll designed so that each household has an equal chance of being selected and one registered voter is interviewed from each selected household. Analyze what would happen if single-voter households were ...Continuing with the sample from the preceding exercise: a. Find the population mean for salary. b. Compare this population mean to the sample average for salary. In particular, how many standard errors apart are they? c. ...Post your question

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