According to the records of an electric company serving the Boston area, the mean electricityconsumption during winter for all households is 1650 kilowatt-hours per month. Assume that the monthlyelectric consumptions during winter by all households in this area have a normal distribution with a meanof 1650 kilowatt-hours and a standard deviation of 320 kilowatt-hours. The company sent a notice toBill Johnson informing him that about 90 % of the households use less electricity per month than hedoes. What is Bill Johnson’s monthly electricity consumption?