Test 2 CIT 32000 Altom Spring 2012 Name _______________________________________ Important Notes: • There are parts of the test that rely on material I covered in class, and may not appear in the book....

Test 2 CIT 32000 Altom Spring 2012 Name _______________________________________ Important Notes: • There are parts of the test that rely on material I covered in class, and may not appear in the book. • In cases where I ask you for explanations or interpretations, I am prepared to accept a wide range of views if you can provide a strongly reasoned argument. You must convince me. Present whatever evidence seems compelling. • Use these pages as scratch paper. Show your work on all problems. Use the backs of the pages if necessary. • Calculators and stats software may be used, but show your work wherever possible. I give partial credit for thinking through problems even if they have the wrong answer. • Remember to read the problem carefully before beginning. Be meticulous and think carefully. • Return this test promptly. It must be in my hands by the beginning of the class period when it is due. I cannot accept late submissions.Test 2, CIT 32000, Spring 2012 Altom P. 2 A large US university has multiple campuses. One campus, in Broadville, has the newest and greatest security software. Another campus, in Titus, has the older software, but maintains that it works better than the newer version, and that their rate of security breach is less than that of Broadville. The university proposes a hypothesis test to settle the issue. 1. Identify and write the null hypothesis. Use proper terminology. _____________________________________________________________________(5 pts) 2. Identify and write any alternative hypotheses. Use proper terminology. _____________________________________________________________________(5 pts) The university has decided to move ahead on the hypothesis test. Each campus submits a sample of 50 randomly-chosen days, with the security breaches on each day. Broadville’s average is 2.3 per day, with a standard deviation of .3, while Titus’ average is 1.9 with a standard deviation of .4. 3. The Broadville...