Maggy Mwangi
A PHP Error was encountered
Severity: Notice
Message: Undefined index: userid
Filename: views/question.php
Line Number: 212
Backtrace:
File: /home/mycocrkc/statisticsanswered.com/application/views/question.php
Line: 212
Function: _error_handler
File: /home/mycocrkc/statisticsanswered.com/application/controllers/Questions.php
Line: 416
Function: view
File: /home/mycocrkc/statisticsanswered.com/index.php
Line: 315
Function: require_once
A coach uses a new technique to train gymnasts. 7 gymnasts were randomly selected and their competition scores were recorded before and after the training. The results are shown below.
Subject A B C D E F G
Before 9.4 9.5 9.6 9.6 9.4 9.6 9.6
After 9.5 9.7 9.6 9.5 9.5 9.9 9.4
Do the data suggest that the training technique is effective in raising the gymnasts’ scores?
Perform a hypothesis test at the 5% significance level.