
Advanced Statistics Advanced Probability and Statistics Math Forum 
 LinkBack  Thread Tools  Display Modes 
January 23rd, 2010, 02:17 PM  #1 
Newbie Joined: Jan 2010 Posts: 1 Thanks: 0  Test Statistic for Paired Sample Test
In this problem I am comparing two brands of golf balls using an automated machine so all variables are identical in both tests except for the brand. A random sample of each brand was taken: Brand A: 234, 236, 230, 227, 234, 233, 228, 229, 230, 238 Brand B: 240, 236, 241, 236, 239, 243, 230, 239, 243, 240 I am trying to find "The test statistic for testing whether the two population means are equal." I am using this equation: tstat = (dbar)  (?d)/((sd/(sqrt(n)) Where dbar = mean paired difference = 6.8 ?d = hypothesized population mean paired difference = 0 sd = sample standard deviation for paired differences = 4.442 n = number of paired values in sample = 10 I am getting tstat = 4.84 Unfortunately, this is a multiple choice problem and my possible answers are: 1. F = 1.115 2. t = 1.96 3. t = 4.04 4. t = 2.58 Any ideas what I am doing wrong? Thank you for your help. 

Tags 
paired, sample, statistic, test 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Hypthesis testing  ttest statistic  Anne1010  Advanced Statistics  0  April 14th, 2010 10:45 AM 
simple statistic : Hypothesis test  naspek  Advanced Statistics  0  February 19th, 2010 06:37 PM 
two sample KStest  GiliSu  Advanced Statistics  0  October 2nd, 2009 04:08 PM 
z test, t test, or chi squared test  johndeere19  Advanced Statistics  1  July 1st, 2009 11:34 AM 
Find critical value, Ftest value and Test Null Hyp.  symmetry  Advanced Statistics  0  April 7th, 2007 03:05 AM 