1.The president of an electronics store chain wants to know how best to motivate her sales staff. One view is that sales people will work hardest if they are paid entirely through commissions on sales. A competing view is that customers are more likely to buy if sales staff are not "pushy", so that sales staff paid entirely through salary will be the most productive. A third view is that staff will be most productive if they have the security of some salary but also the incentive of some commission, so that a mixed model will wotk best. To find out which approach leads to the most sales, the president randomly selects four sales people and has each of them work for one month under each of the salary schemes. Each month, the president measures their respective sales totals, producing the following results (sales in hundreds of dollars): SalespersonSalary onlyCommission onlyMixed model Bryanna108155122 Carly97106 98 Olivia83138103 Alisha112162141 a)Is there an overall significant difference between the average sales totals for the three salary schemes (alpha = .05)? (15 points) b)Prior to collecting the data, the company president predicted that the Commission Only scheme would result in significantly higher sales than the Salary Only scheme. Do the data support this prediction (alpha = .05)? (5 points)