Stat homework 6

Stat homework 6 - SCM 200 Introduction to Statistics for...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the 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.

Page1 / 6

Stat homework 6 - SCM 200 Introduction to Statistics for...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online