1. A raffle offers a first prize of $500, and two second prizes of $50 each. One ticket costs $2, and 1000 tickets are sold. Find the expected winnings for a person who buys one ticket.
2. In a survey of 25 patients who smoked, the following data was obtained. Each value presents the number of cigarettes the patient smoked per day. Construct a frequency distribution table which consists of six class limits, frequency, relative frequency, and cumulative frequency.
4 21 10 23 11 13 2 8 13 9 12 36 6 17 18 15 16 14 19 14 15 11 25 28 29