A data set of marks is available in the file called CRE01-17.Select 10 random samples of size 10 from this data set. Using the =AVERAGE function in Excel, calculate the average mark from the population data, and calculate the sample average from each sample. Are the sample averages fairly close to the true population average?
Answer to relevant QuestionsRepeat exercise 17, but this time select 10 random samples of size 15 from the marks data set. Compare the sample averages you get from these 10 samples with the sample averages you got in exercise 17. Which averages are ...What are some of the difficulties in gathering data through personal interviews? As food for thought, watch some clips from a TV show segment called Talking to Americans (from This Hour Has 22 Minutes), in which Rick Mercer ...Exhibit 2.60 shows some data on the number of defects observed during different shifts at a manufacturing plant. Create an appropriate graph to summarize these data, and comment. In exhibit An economist wants to study the relationship between household income and monthly spending on restaurant meals. Data are collected from a random sample of households. Create an appropriate graph of the data, and comment. A human resources (HR) manager wants to see if she can predict job success from a college graduate's final average grade. The manager collects data for a random sample of employees hired in the last two years. The employees ...
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