CH_10_Comparing_means_of_related_populations_and_proportions - CH 10 Comparing Means of Related Populations and Proportions 1 Macrosoft a software

# CH_10_Comparing_means_of_related_populations_and_proportions...

• Notes
• 2

This preview shows page 1 - 2 out of 2 pages.

CH 10: Comparing Means of Related Populations and Proportions 1. Macrosoft, a software application company, has just developed a new financial applications package. It claims to provide the same features as the current market leader in financial applications software, but is faster in processing speed. In order to test this assertion, 10 randomly selected financial projects are selected and then run on the software of both the market leader and Macrosoft’s. The results are given in the file COMPTIME. At the 0.05 level of significance, is there evidence that the mean processing time is significantly greater when financial applications projects use the current market leader rather than Macrosoft’s software package? 2. You are the manager of TC Resort Properties which owns two hotels, Beachcomber and Windsurfer, on a particular island. In tabulating responses to the single question, “Are you likely to choose this hotel again?”, 163 of 227

Subscribe to view the full document.

Unformatted text preview: guests at the Beachcomber responded yes, and 154 of 262 guests at the Windsurfer said yes. At the 0.05 level of significance, is there evidence of a significant difference in guest satisfaction between the two hotels? Results for: COMPTIME.MTW Paired T-Test and CI: Current, New Paired T for Current - New N Mean StDev SE Mean Current 10 9.92600 0.08631 0.02729 New 10 9.84200 0.03994 0.01263 Difference 10 0.084000 0.084354 0.026675 95% lower bound for mean difference: 0.035102 T-Test of mean difference = 0 (vs &gt; 0): T-Value = 3.15 P-Value = 0.006 Test and CI for Two Proportions Sample X N Sample p 1 163 227 0.718062 2 154 262 0.587786 Difference = p (1) - p (2) Estimate for difference: 0.130275 95% CI for difference: (0.0467379, 0.213813) Test for difference = 0 (vs not = 0): Z = 3.01 P-Value = 0.003...
View Full Document

• Spring '12
• webber
• Statistics, MACROSOFT, Windsurfer

### 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

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes