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stat 201 exam 2 review

# stat 201 exam 2 review - STAT 201 Exam 2 Name Fall 2010...

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STAT 201 Exam 2 Fall 2010 Name: ___________________________________ Section: ________________ You have 110 minutes to complete the exam. Use your time wisely. Read each question carefully and answer all parts. For the possibility of partial credit, show all work. Scientific calculators are allowed, but cell-phone calculators are prohibited. A formula sheet will be provided. Hand it in with your exam when you are finished. Raise your hand if you have a question. Good luck! Question Points Score 1 6 2 16 3 20 4 4 5 6 6 18 Total 70

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STAT 201 Exam 2 Review Fall 2010 1. Let random variable X represent the profit or loss an automobile insurance company. a. Fill in the missing probability of a \$65 profit. (3 pts.) b. What is the mean (expected value) of random variable X? (3 pts.) 2. The following table indicates the gender and cereal brand preference of 140 subjects. Gender Male Female A 24 32 Brand preferred B 21 28 C 15 20 a. What is the probability a subject prefers brand C? (2 pts.) b. What is the probability a subject is female and prefers brand B? (2 pts.) c. What is the probability a subject prefers brand A or brand B? (2 pts.)
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stat 201 exam 2 review - STAT 201 Exam 2 Name Fall 2010...

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