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Unformatted text preview: MGMT 305 SECOND EXAM (Sample Exam) Date: March 10, 2010 Part I Multiple-Choice Questions: Identify the letter of the choice that best completes the statement or answers the question. There are 20 multiple-choice questions. 2 points for each question. ____ 1. Suppose we have a lower-tailed 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 p-value? a. p-value is large or small depends on whether its a lower-tailed test or an upper-tailed test. b. p-value depends on the level of significance. c. In an upper-tailed test, if the p-value is larger than the level of significance, then we reject the null hypothesis. d. Whether its a lower-tailed test or an upper-tailed test, we do not reject the null hypothesis if the p-value 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. Fifty-two 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 University-West Lafayette.
- Spring '08