This preview shows pages 1–4. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: SCM 200 Introduction to Statistics for Business Spring 2008 Homework Assignment #6 One and Two Sample Hypothesis Tests Name: _____Ben Hollenbach _______________________ SCM200 – Homework 6 Problem 1 Sample Mean 724.99 Sample std dev 12.49 Hypothesis Statement Null Hypothesis The average yield strength is less than 720MPa Alternative Hypothesis The average yield strength is at least 720MPa p value .0285 Decision Reject Null Hypothesis Comments From this calculation we see that the t value has to be greater than 1.711 in order to reject the null hypothesis, and the true t value is 2.00. This allows us to reject the null hypothesis and temporarily assume the alternative hypothesis. 20:43:26 Page 2 SCM200 – Homework 6 Problem 2 Processing Time Machine 1 Mean 363.84 Standard Deviation 35.27 Hypothesis Statement Null Hypothesis the new machine will be able to decrease grinding time by less than 30 seconds on average Alternative Hypothesis the new machine will be able to decrease grinding time by at least 30...
View
Full
Document
This note was uploaded on 04/15/2008 for the course SCM 200 taught by Professor Kumarsanjay during the Spring '08 term at Penn State.
 Spring '08
 KUMARSANJAY

Click to edit the document details