Each day, a news vendor must determine how many
New York Herald Wonder fulls to order. She pays 15¢ for each
paper and sells each for 30¢. Any leftover papers are a total
loss. From past experience, she believes that the number of
papers she can sell each day is governed by the probability
distribution shown in Table 5. How many papers should she
order each day?

TABLE 5
No. of Papers         Demanded Probability
50                                .30
70                                .15
90                                .25
110                              .10
130                              .20

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