If the regression function to measure the effect of number of salespeople employed on number of automobiles sold was estimated to be y - 104 + 17.2x, which of the following is true? For every additional salesperson, the number of automobiles sold will increase by 27 6 units. 95% confident that for every additional salesperson, the number of automobiles sold will Increase by 17:2 units. For every additional salesperson, the number of automobiles sold will increase by 17.2 units For every additional wa increase by 10.4 units. . Previous