{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

SP05.final.verB - COURSE DSCI 3710 Print Name Final Exam...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
COURSE: DSCI 3710 Print Name: Final Exam Signature: Version B S.I.D.#: Spring 2005Seat Number: Note: Whenever question(s) are connected you may be asked to assume a result (given a value) from the previous question but this result may or may not be correct. This is to prevent you from losing points on a second question because you made a mistake on a previous question. Instructions: n Please print your name, student ID number, and seat number on this exam. Also, put your signature on this exam. l Please PRINT your name, this exam version (from above), and your seat number on your scantron. To better protect your privacy also print your name on the back side of your scantron. l You have 105 minutes to complete this exam. The exam is open book, open notes, and open mind. You may use any type of calculator, but please show all your work on this exam and mark all answers on the scantron . l Many of the questions follow the format of those in Hawkes Learning Systems: Business Statistics. Others are either based on the Excel assignments or use an Adventures-like approach with problems similar to those assigned as homework from the text. l Please DO NOT DETACH this exam. When you have completed the exam, please insert completed scantron into the exam booklet and turn them both to your instructor, at the front desk. l No cheating. l Good luck and we wish you well on the exam. 1
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Use the information given below to answer the two questions (2) that follow: The production manager in a chemical plant knows that the time for a certain production line to stabilize, following any stoppage (stabilization period) is normally distributed. He uses a sample of 15 random stoppages to determine a 90% confidence interval for the true mean stabilization period to be 8.1 to 9.5 minutes. The firm = s cost accountant would like to answer the following question: “Is there sufficient evidence, at the 10% significance level, to indicate that the average stabilization period is different from 8 minutes?” 1. What should be the decision and conclusion based on the confidence interval? . Reject the null hypothesis, conclude that there is evidence the true mean stabilization period is not equal to 8 minutes. * . Fail to reject the null hypothesis, conclude that there is insufficient evidence the true mean stabilization period is not equal to 8 minutes. . Fail to reject the null hypothesis, conclude that there is insufficient evidence the true mean stabilization period is equal to 8.8 minutes. . Reject the null hypothesis, conclude that the true mean stabilization period is 8.8 minutes. . There is insufficient information given to decide whether the true mean stabilization period is equal to 8 minutes or not. 2. Alpha, the significance level used in any hypothesis test, refers to . The probability of rejecting a false Ho.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern