10.3 Matched Samples

10.3 Matched Samples

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

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

Unformatted text preview: kly UPX INTEX Difference distributed to Vancouver 32 25 7 district offices throughout Victoria 30 24 6 Canada. The Ottawa 19 15 4 firm must Toronto 16 15 1 decide between two delivery Montreal 15 13 2 services, UPX need the Calgary to know18 mean 15 3 and INTEX, to (i.e., Halifax point estimate) and 14 15 –1 transport its standard deviation of the documents. Sudbury 10 8 2 difference: How can the Brandon 9 –2 mean: 2.77 company Edmonton 16 5 standard deviation:1 determine which Example What is the 95% confidence interval for the mean difference between the services? Hypothesis Tests A Winnipeg The firm sent two copies of documents, one by Interval Estimate:delivery service, to a random sample of 10 based company each has documents district offices. See the data in the table below: that must be d ± t sd , df = n − 1 α2 n Office quickly UPX INTEX Difference distributed;to sd = 2.91; df = 9; t 0.05 2 = 1.83 d = 2.7 Vancouver 32 25 7 district offices throughout Victoria 30 24 6 Canada. The Ottawa 19 15 4 firm m...
View Full Document

This document was uploaded on 03/05/2014.

Ask a homework question - tutors are online