Eco5_exam3 - Eco 5 Fall 2005 Exam III MULTIPLE CHOICE...

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Fall 2005 Name: Exam III MULTIPLE CHOICE QUESTIONS ( 10 points ) In the following multiple-choice questions, circle the correct answer. 1. Parameters are a. numerical characteristics of a sample b. numerical characteristics of a population c. the averages taken from a sample d. numerical characteristics of either a sample or a population 2. How many simple random samples of size 3 can be selected from a population of size 7? a. 7 b. 21 c. 35 d. 343 3. Sampling distribution of µ § is the a. probability distribution of the sample mean b. probability distribution of the sample proportion c. mean of the sample d. mean of the population 4. A simple random sample of 100 observations was taken from a large population. The sample mean and the standard deviation were determined to be 80 and 12 respectively. The standard error of the mean is a. 1.20 b. 0.12 c. 8.00 d. 0.80 5. A population has a standard deviation of 16. If a sample of size 64 is selected from this population, what is the probability that the sample mean will be within (2 of the population mean? a.
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This note was uploaded on 04/01/2009 for the course ECON 5 taught by Professor Liu during the Spring '06 term at City College of San Francisco.

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Eco5_exam3 - Eco 5 Fall 2005 Exam III MULTIPLE CHOICE...

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