The operator of the local mall wants to find out how many of the mall's employees make purchases in the food court when they are working. she hopes to use these data to increase the rent and attract new food vendors. in total, there are 1023 employees who work at the mall. the best method to obtain a random sample of the employees would be to survey

The owner of firewood to go is considering buying a hydraulic wood splitter which sells for $50,000. he figures it will cost an additional $100 per cord to purchase and split wood with this machine, while he can sell each cord of split wood for $125. if, for this machine, design capacity is 50 cords per day, effective capacity is 40 cords per day, and actual output is expected to be 32 cords per day, what would be its efficiency?