Elizabeth.Marisol.MM207 Unit 6 Project Form 3 correction

Elizabeth.Marisol.MM207 Unit 6 Project Form 3 correction -...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
MM207 Unit 6 Project Form 3 Total points are 40. Points are included with each problem. Included with each section or problem are reference examples and end of section  exercises that can be used as a guide. Be sure to show your work in case partial   credit is awarded. To receive full credit, work must be shown if applicable. Section 6.1: Confidence Intervals for the Mean (Large Samples) 1. Find the critical value z c  necessary to form a confidence interval at the  given level of confidence.  (References: definition for level of confidence  page 311, end of section exercises  5 – 8 page 317)  (2.5 points each) a. 90% a. 90% zc = 1.644853627= 1.645 b. 80% zc = 1.281551566 = 1.282 2. The new Twinkle bulb has a standard deviation of 35 hours. A random  sample of 50 light bulbs is selected from inventory. The sample mean was found  to be 550 hours.  a. What is the  margin of error  [E] for a 90% confidence interval? 
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
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