According to the Bureau of Labor Statistics, the average hourly wage in the United States was $ 22.57 in May 2010. To confirm this wage, a random sample of 36 hourly workers was selected during the month. The average wage for this sample was $ 21.32. Assume the standard deviation of wages for the country is $ 4.30.
a. Are the results of this sample consistent with the claim made by the Bureau of Labor Statistics using a 95% confidence interval?
b. What is the margin of error for this sample?
c. Verify your result using Excel.

  • CreatedJuly 17, 2015
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