10.3 Matched Samples

# See the data in the table below office upx intex

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: 5 Victoria 30 24 Ottawa 19 15 Toronto 16 15 Montreal 15 13 Calgary 18 15 Halifax 14 15 Sudbury 10 8 Brandon 7 9 Edmonton 6 1 Statistical Inference about the Difference between Two Population Means (σ1 and σ2 unknown) Option 1 Population Mean parameter point estimator standard error Hypothesis Tests margin of error interval estimate degrees of freedom Difference Between 2 Population Means μ D = μ1 – μ2 Option 1: Independent Samples d x− 2 =1 x x • generates two sets of s s 2 s22 σx = sd = 1 + data which can be n n n2 1 treated as 2 s s 2 s22 populations tα 2 tα 2 1 + n n n2 • 1 can analyze the s difference between s2 s22 x ±tα 2 d ±tα 2 1 + the 2 population n nn 1 2 2 means as already s s +n n demonstrated for n1 − df = 2 s s Outcome 10.2 1 +1 ( n1 −1 1 2 1 () 1 2 2 2 ) 2 n1 n 2 −1 () 2 2 n2 2 Example Hypothesis Tests A Winnipeg based company has documents that must be quickly distributed to district offices throughout Canada. The firm must decide between two delivery services, UPX and INTEX, to transp...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online