Probability based on relative-frequency

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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

Reference no: EM1317801

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