Based on the multiple regression output below, choose the variable with the highest level of significance.

A student wants to know the probability of getting a value less than -0.76 in a standard normal distribution (=0, =1). The student finds that the area under the curve to the left of positive 0.76 is 0.7764. What is the probability of getting a value less than -0.76?

A company's retained earnings on Dec. 31st, 2009 to 2013 is as follows:

On the pro-forma income statement for 2014, the net income is $10,000. The expected dividends to be paid in 2014 is $3,500. What is the projected retained earnings on Dec. 31st, 2014?

A heavily populated town with many gas stations has an average price of $3.25 for a gallon of gasoline. However, one gas station charges $3.60 for a gallon of gasoline and remains very competitive in the market. Which of the following situations could NOT explain this gas station's success?

An airline company wants to improve its understanding of its product and customers. Using an internal model, the company predicts that business class revenues will decrease if the price of business class is reduced, but coach class revenues will increase if the price of coach class is reduced. Why might this be the case?