Seitzs list of several hundred business-to-business customerscontinues to grow.

Seitzs list of several hundred business-to-business customerscontinues to grow. Managers would like to know whether theaverage dollar amount of sales per transaction per customer haschanged from last year to this year. Suppose companyaccountants sampled 20 customers randomly from last years recordsand determined thatthe mean sales per customer was $2300with a standarddeviation of $500. They sampled 25 customersrandomly from this years les and determined that the meansalesper customer for this sample was $2450 with astandard deviation of $540. Analyze these data andsummarizeyour ndings for managers. Explain how thisinformationcan be used by decision makers. Assume that salespercustomer are normally distributed.