Elizabeth.Marisol.MM207 Unit 6 Project Form 3.doc

# Elizabeth.Marisol.MM207 Unit 6 Project Form 3.doc -...

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

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

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 11/05/2011 for the course STATISTICS MM207 taught by Professor Watson during the Fall '09 term at Kaplan University.

### Page1 / 3

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

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online