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When analyzing KPIs for a retail business, what would a consistently increasing Cost of Customer Acquisition (CAC) coupled with decreasing Customer Lifetime Value (CLV) most likely indicate? (difficulty: hard)

A company's absenteeism rate shows that employees missed 1,200 workdays in a year. If the company has 200 employees working 250 days each annually, what is the absenteeism rate? (difficulty: hard)

A retail data analysis shows that shelf space allocated to Product X generates $100 per square foot, while Product Y generates $80 per square foot. If 100 square feet must be allocated between these products, what is the opportunity cost per square foot of allocating space to Product Y? (difficulty: medium)

In analyzing stock market returns, if a portfolio's daily returns have a standard deviation of 2% and assuming a normal distribution, approximately what percentage of returns fall within two standard deviations of the mean? (difficulty: medium)

A company's revenue increased from $2M to $3.5M over a 5-year period. What was the annual simple growth rate and how does it compare to the CAGR? (difficulty: hard)