Carefully explain the distinction between stratified random sampling and cluster sampling. Provide illustrations of sampling problems where each of these techniques might be useful.
Answer to relevant QuestionsThe supervisor of a plant obtained a random sample of employee experience (in months) and times to complete a task (in minutes). Graph the data with a component bar chart. Construct a time-series plot for the following number of customers shopping at a new mall during a given week. Day Number of Customers Monday .......... 525 Tuesday .......... 540 Wednesday ........ 469 Thursday ...The U.S. Senate has 100 members. Information was obtained from the individuals responsible for managing correspondence in 61 senators' offices. Of these, 38 specified a minimum number of letters that must be received on an ...Refer to the data of Exercise 17.27. If 80 managers were sampled, determine how many sample members would be from subdivision 1 under each of the following schemes. a. Proportional allocation b. Optimum allocation, assuming ...Of the 1,395 colleges in the United States, 364 have 2-year schools. In a random sample of 40 two-year schools, it was found that the text Statistics Can Be Fun was used in 10 of the schools. In an independent random sample ...
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