Trình bày khái niệm phân tổ thống kê? Các bước tiến hành phân tổ thống kê? Bước nào là quan trọng nhất? Tại sao?

2. a box contains 50 slips of paper. forty of the slips are marked $0, 8 of the slips are marked $20, 1 slip is marked $100, and the last one is marked $500. find the expected net winnings of a person who pays $10 to randomly select one slip of paper. interpret.

True tomato inc. makes organic ketchup. to promote its products, this firm decided to make bottles in the shape of tomatoes. to accomplish this, true tomato worked with its bottle manufacture to create a set of unique molds for its bottles. which of the following specialized assets does this example demonstrate? (a) site specificity (b) research specificity (c) physical-asset specificity (d) human-asset specificity

When used-car dealers signal the quality of a used car with a warranty, a. buyers believe the signal because the cost of a false signal is high b. it is not rational to believe the signal because some used-car dealers are crooked c. the demand for lemons is eliminated d. the price of a lemon rises above the price of a good used car because warranty costs on lemons are greater than warranty costs on good used cars