QSO 510 Discussion 7

# QSO 510 Discussion 7 - A marketing research firm tests the...

• Homework Help
• 2
• 100% (2) 2 out of 2 people found this document helpful

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

A marketing research firm tests the effectiveness of three new flavorings for a leading beverage using a sample of 30 people, divided randomly into three groups of 10 people each. Group 1 tastes flavor 1, group 2 tastes flavor 2 and group 3 tastes flavor 3. Each person is then given a questionnaire which evaluates how enjoyable the beverage was. I would like to determine whether there is a perceived significant difference between the three flavorings. The sample data are as follows: Flavor 1 Flavor 2 Flavor 3 13 12 7 17 8 19 19 6 15 11 16 14 20 12 10 15 14 16 18 10 18 9 18 11 12 4 14 16 11 11 My null hypothesis is that any difference between the three flavors is due to chance. H0: μ1 = μ2 = μ3 By inputting this data into my Excel spreadsheet and using my Data Analysis tool for a single factor ANOVA with an alpha of 0.05. The results: SUMMARY Groups Coun t Su

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

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

Unformatted text preview: m Average Variance ´lavor 1 10 150 15 13.3333333 3 ´lavor 2 10 111 11.1 18.7666666 7 ´lavor 3 10 135 13.5 14.0555555 6 ANOVA Source of VariaTon SS df MS F P-value F crit BeTween Groups 77.4 2 38.7 2.51540683 7 0.099596 3 3.35413082 9 WiThin Groups 415. 4 27 15.3851851 9 ³oTal 492. 8 29 In these results, the null hypothesis states that the mean likability values of 3 diFerent ±avors are equal. Because the p-value is 0.995963, which is larger than the signi²cance level of 0.05, I will fail to reject the null hypothesis and conclude that some of the ±avors have nearly the means. However, I can run the risk of making a Type II Error which is the failure to reject a false null hypothesis. I may want to increase the power of my test by using a larger sample or use a higher alpha....
View Full Document

• Spring '13
• WenjunGu
• Null hypothesis, Harshad number, Statistical hypothesis testing, Type I and type II errors, Flavor

{[ 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