In: Statistics and Probability
1. The heating bills for a selected sample of houses using various forms of heating are given below (values are in dollars).
Gas Heated Homes Central Electric Heat
Pump
83 90 81
80 88 83
82 87 80
83 82 82
82 83 79
At alpha = 0.05, test to see if there is a significant
difference among the average bills of the homes. Use both the
critical and p-value approaches.