Unformatted text preview: distribution: X (Number of cakes sold) 1 2 3 4 P(x) 0.1 0.2 0.5 0.1 0.1 a. If the bakery sells 2 cakes, find the profit. b. Find the profits for each number of cakes sold. c. Find the expected profits for the bakery on their fancy cakes. 5. In a raffle the prizes include one first prize of $3,000, five second prizes of $1,000 each and twenty third prizes of $100 each. In all, 10,000 tickets are sold at $1.50 each. What are the expected net winnings of a person who buys one ticket? What does this mean? 6. The distribution given below describes the amount of time (in hours) spent during a day on homework by 9yearolds during the year 19871988. Amount of time spent (in hours) none 0.5 1.5 2.5 Percent of Students 33 47 13 7 a. Find the expected amount of time spent by a 9yearold during a day in 198788. b. Find the standard deviation of the amount of time spent....
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 Spring '08
 TBA
 Statistics, Probability, fancy cakes, black beads

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