An oil company is considering two sites on which to drill. The sites are described in the following table. Complete parts (a) through (b) below. Site A: Profit if oil is found: $120 million Loss if no oil is found: $20 million Probability of finding oil: 0.2 Site B: Profit if oil is found: $180 million Loss if no oil is found: $30 million Probability of finding oil: 0.1 a. Which site has the larger expected profit? Site A has the larger expected profit. Site B has the larger expected profit. The expected profits for both sites are the same. O O O
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An oil company is considering two sites on which to drill. The sites are described in the following table. Complete parts (a) through (b) below.
Site A: Profit if oil is found: $120 million
Loss if no oil is found: $20 million
Probability of finding oil: 0.2
Site B: Profit if oil is found: $180 million
Loss if no oil is found: $30 million
Probability of finding oil: 0.1
a. Which site has the larger expected profit?
ti
Site A has the larger expected profit.
Site B has the larger expected profit.
/1
The expected profits for both sites are the same.
/1
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Interviews with shoppers who made unplanned purchases revealed the average purchase amounts shown to the right. Each group has 100 shoppers. Complete parts (a) through (c) below. (a) If each group includes 100 shoppers, which group spent the most money in total? Condition None Scent Music Scent and music A. The group that was exposed to only music spent the most money in total. B. The group that was exposed to only scent spent the most money in total. C. The group that was exposed to both scent and music spent the most money in total. D. The group that was exposed to neither scent nor music spent the most money in total. (b) If medians summarized each group's spending rather than means, would you be able to identify the group with the largest spending? A. No, the total amount cannot be recovered from the median value. B. Yes, the total amount can be recovered from…The director of library services at a college did a survey of types of books (by subject) in the circulation library. 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At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.3 4.3 6.6 7.0 7.0 Bank B 5.4 5.8 6.1 6.8 78 8.5 10.0 A Click the icon to view the table of Chi-Square critical values. Construct a 95% confidence interval for the population standard deviation a at Bank A O minThe director of library services at a college did a survey of types of books (by subject) in the circulation library. Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. 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