# April 21 - Significance testing for two population...

• Notes
• 1

This preview shows page 1. Sign up to view the full content.

April 21, 2008 Significance testing for two population means (independent sample means) Example 1 = male 2 = female table E3 -> t critical = +/- 2.000 1 = 5.7 arrests t obtained (calc) = ( 1 - 2 )/ ( (s 1 2 / n 1 -1) + (s 2 2 / n 2 -1)) s 1 2 = 2.5 variance = (5.7 – 5.2) / ( (2.5 / 30 - 1) + (2.0 / 30 – 1)) n1 = 30 = .5 / (.08 +.07)
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2 = 5.2 arrests = .5/.39 = 1.28 = t calculated S 2 2 = 2.0 (variance) FAIL TO REJECT NULL HYPOTHESIS n2 = 30 α=.05 two tailed H = μ1=μ2 H 1 = μ1 ≠ μ2 Df = n1 + n2 – 2 = 30+30-2=58 1 Tailed H = μ1=μ2 H 1 = μ1>μ2 T critical = +1.671 T calc = 1.28 STILL FAIL TO REJECT...
View Full Document

• Spring '09
• Kupchick
• Null hypothesis, Statistical hypothesis testing, Statistical power, Ronald Fisher, reject null hypothesis, female table E3

{[ 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