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**Unformatted text preview: **STAT 350 Practice Exam 2 This is a closed book exam. You are allowed to bring a calculator and one page formula sheet. There are 4 problems, with point values as shown. • DO NOT open or start this exam until instructed to do so. • Before handing the exam in, write your name in the space provided at the bottom of the first sheet. • You may use the backs of sheets and the blank space after the question to display your solution. Make sure that you label all parts of your work so that a grader can read the solution clearly. • You need to explain all of your work including your answers. • You may use a calculator, but you may NOT share calculators. • No books or notes of any kind are allowed. • If you have a question, raise your hand. Name: 1 1. (20 pts) Suppose 40% of the US population have O blood. Suppose a random sample of 5 people is to be chosen and their blood type examined. Let ˆ p represent the sample proportion of people with O blood....

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