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Unformatted text preview: MGMT 305 SECOND EXAM (Sample Exam) Date: March 10, 2010 Part I MultipleChoice Questions: Identify the letter of the choice that best completes the statement or answers the question. There are 20 multiplechoice questions. 2 points for each question. ____ 1. Suppose we have a lowertailed test H : > and Ha: < . If we reject H 0 at 5% level of significance, which one is the value of the z test statistic? a. 1.4 b. 2.5 c.1.4 d.2.5 ____ 2. Which of the following is true about the pvalue? a. pvalue is large or small depends on whether its a lowertailed test or an uppertailed test. b. pvalue depends on the level of significance. c. In an uppertailed test, if the pvalue is larger than the level of significance, then we reject the null hypothesis. d. Whether its a lowertailed test or an uppertailed test, we do not reject the null hypothesis if the pvalue is larger than the level of significance. ____ 3. Suppose the mean sales volume of an automobile dealership is 15 automobile per month. If the manager of the dealership wants to conduct a research study to see whether a new bonus plan increases the sales volume, then which of the following are the right hypotheses? a. H : = 15 H a : 15 b. H : 15 H a : > 15 c. H : > 15 H a : 15 d. H : 15 H a : < 15 ____ 4. It is known that the mean of a population is 58. A sample of size 50 is taken and the sample mean is computed as 55. You decided to reject the null hypothesis that 60. a. you have committed a Type I error. b. you have committed a Type II error. c. you have committed either Type I or Type II error. d. you have committed neither Type I nor Type II error. ____ 5. If the null hypothesis is not rejected at the 2% level of significance, it a. will always be rejected at the 1.5% level of significance. b. will never be rejected at the 3% level of significance. c. may be rejected or not rejected at the 1.5% level of significance. d. will never be rejected at the 1.5% level of significance. ____ 6. Two independent simple random samples are selected to test the difference between the means of two populations whose standard deviations are not known. The sample sizes are n 1 = 20 and n 2 = 40. The correct distribution to use is the a. Normal distribution b. t distribution with degrees of freedom of 60 c. t distribution with degrees of freedom of 59 d. t distribution with degrees of freedom of 58 ____ 7. A random sample of 100 people was taken. Fiftytwo of the people in the sample favored candidate Bush. We are interested in determining whether the proportion of the population in favor of Bush is significantly less than 55%. What is the value of the test statistic?...
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This note was uploaded on 01/31/2011 for the course MGMT 305 taught by Professor Priya during the Spring '08 term at Purdue UniversityWest Lafayette.
 Spring '08
 Priya

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