A family’s utility costs are as follows: Electricity: $0.13 per kWh Propane gas: $2.30 per gallon Their monthly usage fluctuates. Assume both are normally distributed with mean and standard deviations...


A family’s utility costs are as follows:
Electricity: $0.13 per kWh
Propane gas: $2.30 per gallon
Their monthly usage fluctuates. Assume both are normally distributed with mean and standard
deviations
Electricity: μ = 850 kWh, σ = 100 kWh
Propane gas: μ = 55 gallons, σ = 6 gallons
Let Y = the monthly utility cost


d) the probability that the monthly cost of electricity is greater than the monthly cost of propane gas



Jun 05, 2022
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