Stat homework 6

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

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

SCM 200 Introduction to Statistics for Business Spring 2008 Homework Assignment #6 One and Two Sample Hypothesis Tests Name: _____Ben Hollenbach _______________________

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

View Full Document
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 seconds on average Test Output

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.

{[ snackBarMessage ]}

### What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern