A manager in a rapidly growing industry wishes to study the effects of motivation on sales in particular firm.Traditionally, all sales staff has been salaried.Senior management has been most reluctant to change the existing system.Within his own branch, however, the manager wishes to gather evidence on whether or not to pay commissions to salespersons.Of 24 new salespersons, 12 are paid an hourly rate and 12 are paid a commission.The 24 individuals are randomly assigned to the two groups.The following data represent the sales volume (in thousands of dollars) achieved during the first month on the job.

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