Sales Transactions
Past sales data for a company indicates that the average sale was $120 per transaction with a standard deviation of $15. The company provided enhanced training for the new sales force and recorded the amount for 48 transactions. The results are shown below.
n mean sd min Q1 median Q3 max
48 130.26 17.6 12.80 67.45 107.10 180.5 317.2 Did, at the 10% level, the training result in an increase in the mean transaction amount? Make sure to provide explicit answers with your work shown for all 11 steps of a hypothesis test.