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1 1.4.1 Suppose the company in the invoice example billed quarterly and had, on average, $10 million in accounts receivable each quarter. If short‐term money costs 6%, how much does the company save?

2 1.4.2 Give an example of a business hypothesis, e.g. we think that raising price from $2 to $2.25 won't cost us sales. Describe an experiment to test your hypothesis. What data need to be collected? How should the data be collected?

3 1.4.3 Find an example of a business experiment reported in the popular business literature, e.g. Forbes or The Wall Street Journal.