Exam 2a Sp 04 key - ECON 2843 010 Exam 2 Spring 2004 Form A...

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ECON 2843 – 010 Name Exam 2 ID # Spring 2004 Lab Instructor Form A Lab Meeting Time Students must show all work on problems that involve calculation, even if the answer is multiple choice. 1. In an attempt to improve the taste of its hamburgers, McDonalds general manager decided to test a new secret hamburger spice by putting it in 40% of McDonalds hamburgers at random. Suppose a sample of 100 OU students each bought a hamburger from McDonalds after the test began. What is the probability that the sample proportion of the students who bought hamburgers seasoned with the new secret spice is less than 30%? a. .0207 * b. .049 c. .3 d. .4 e. .9793 2. Refer to question 1. What is the probability that the proportion of the students who bought hamburgers seasoned with the new secret spice is outside the range from 25% to 35%? .8472 1
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Questions 3 - 5 refer to the following: A random sample of the scoring averages for five basketball players in the NCAA showed the following point per game: 24, 20, 30, 35, 10. The sample variance is 92.2.
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This note was uploaded on 04/07/2008 for the course ECON 2843 taught by Professor Hudgins during the Spring '08 term at The University of Oklahoma.

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Exam 2a Sp 04 key - ECON 2843 010 Exam 2 Spring 2004 Form A...

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