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The per capita energy consumption level (in kilowatt-hours) in a certain country for a recent year can be approximated by a normal distribution, as

The per capita energy consumption level (in kilowatt-hours) in a certain country for a recent year can be approximated by a normal distribution, as shown in the figure. (a) What consumption level represents the 7th percentile? (b) What consumption level represents the 21st percentile? (c) What consumption level represents the third quartile? H= 2276 kWh a= 587.7 kWh 276 2276 4276 Kilowatt-hours

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