4.- A recent survey was conducted to compare the cost of solar energy to the cost of gas or electric energy. Results of the survey revealed that the distribution of the amount of the monthly utility bill of a 3-bedroom house using gas or electric energy had a mean of $124.00 and a standard deviation of $15.00. a) Assuming the distribution is mound-shaped and symmetric, would you expect to see a 3-bedroom house using gas or electric energy with a monthly utility bill of $236.50? Answer: YES NO because: b) You receive the following summary statistic information for the weights (in pounds) of 1000 randomly sampled tractor trailers. MIN: 3,996 Q1: 5,596 MEAN: 6,996 STD.DEV.: 1,400 Q3: 8,596 MAX: 10,596 Find the percentage of tractor trailers with weights between 5,596 and 8,596 pounds. Answer: Find the percentage of tractor trailers with weights between 5596 and 10,596 pounds. Answer: