In 2005, the average price of electricity was 10.0 cents per kWh

In 2005, the average price of electricity was 10.0 cents per kWh (kilowatt-hour), and in 2015, the average price was 13.8 cents per kWh. Compare the increase in the price of electricity to the increase in price corresponding to the CPI.

Consumer Price Index. In Exercises, use the Consumer Price Index values from Table 2.2.