answear - a H0 p1 = p2 Ha p1 > p2 b Reject H0 if z > 2.326...

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

View Full Document Right Arrow Icon
a) H 0 : p 1 = p 2 H a : p 1 > p 2 b) Reject H 0 if z > 2.326 c) 5 1 2 1 2 20 4 ˆ 8.322 10 153,348 135,035 X X p x n n - + + = = = + + ( ) ( ) 1 2 5 5 1 2 20 4 ˆ ˆ 153,348 135,035 2.961 1 1 1 1 8.322 10 1 8.322 10 ˆ ˆ 1 153,348 135,035 p p z x x p p n n - - - - = = = æ ö æ ö ÷ ÷ ç ç - + ÷ ÷ - + ç ç ÷ ÷ ÷ ç ç ÷ ç è ø è ø d) Since the test statistic is in the rejection region, we reject the null hypothesis. We have sufficient evidence to conclude that the yellow fire trucks significantly reduced the
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/14/2009 for the course BUSINESS Res 320 taught by Professor Diaz during the Spring '09 term at University of Phoenix.

Ask a homework question - tutors are online