The income statement of Pratt Inc. reports net sales of $3,749.9 million for the current year. The balance sheet reports accounts receivable, net of $486.6 million at December 31 of the current year and $520.2 million at December 31 of the previous year. The days sales outstanding in the current year are:

In the 1970s, kmart used blue light specials to encourage customers to flock to a particular department having a temporary sale. a spinning blue light activated for approximately 30 seconds, and then an in-store announcement informed shoppers of the special savings in the specific department. over time, loyal kmart shoppers learned to flock to the department with the spinning blue light before any announcement of special savings occurred. if kmart was employing classical conditioning techniques, what role did the spinning blue light play?