According to Expedia.com, workers in Italy lead the world in paid vacation days, averaging 42 days per
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According to Expedia.com, workers in Italy lead the world in paid vacation days, averaging 42 days per year. The following data show the number of paid vacation days for a random sample of 20 Italian workers.
These data can also be found in the Excel file titled paid vacation.xlsx.
48 40 30 58 20 40 55 70 20 41 30 30 60 35 25 37 15 30 64 55
a. Construct a 95% confidence interval to estimate the average number of paid vacation days for Italian workers.
b. Do the results from this sample validate Expedia.com’s findings?
c. Verify this interval using Excel.
d. What assumptions need to be made about this population?
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