Sample Exam 4 (Chapter 9)

Sample Exam 4 (Chapter 9) - Exam # 4 (Chapter 9) Name_...

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Exam # 4 (Chapter 9) Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Find the number of successes x suggested by the given statement. 1) Among 620 adults selected randomly from among the residents of one town, 25% said that they favor stronger gun - control laws. A) 154 B) 153 C) 156 D) 155 1) From the sample statistics, find the value of p used to test the hypothesis that the population proportions are equal. 2) n 1 = 100 n 2 = 100 x 1 = 36 x 2 = 37 A) 0.365 B) 0.256 C) 0.329 D) 0.402 2) Determine whether the samples are independent or consist of matched pairs. 3) The effectiveness of a new headache medicine is tested by measuring the amount of time before the headache is cured for patients who use the medicine and another group of patients who use a placebo drug. A) Independent samples B) Matched pairs 3) Find the appropriate p - value to test the null hypothesis, H 0 : p 1 = p 2 , using a significance level of 0.05.
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This note was uploaded on 02/01/2011 for the course COMM 130 taught by Professor Watson-currie during the Spring '08 term at CSU Long Beach.

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Sample Exam 4 (Chapter 9) - Exam # 4 (Chapter 9) Name_...

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