At the Bureau of Labor Statistics site http://www.gov/data/, locate the average price data for electricity measured per 500 KWH (kilowatt-hour) from...

At the Bureau of Labor Statistics site http://www.bls.gov/data/, locate the average price data for electricity measured per 500 KWH (kilowatt-hour) from 2000 to the present. For example the row for 2000 would look like46.404indicating, for instance, that in March of 2000, the cost of 500 kilowatt-hours of electricity cost $45.598 .In the exercises you will be studying the variation within a year as well as across years.Test the hypothesis that the standard deviation of the price of 500 KWH of electricity is $1.25. Use the 2000 data.