My Math Forum  

Go Back   My Math Forum > College Math Forum > Advanced Statistics

Advanced Statistics Advanced Probability and Statistics Math Forum

LinkBack Thread Tools Display Modes
March 18th, 2007, 07:33 AM   #1
Senior Member
Joined: Dec 2006
From: New Jersey

Posts: 378
Thanks: 1

Finding Critical values

1) Dr. Easy saw the scores from the MA-222 test and used the occasion to
test the old adage that girls are smarter than boys on subjects tested by
ACT. Assume the degrees of freedom for this problem is 28. Dr. Easy did the
arithmetic and found the value of the test statistic was 2.69 (alpha equals
0.05). What is the critical value (3 decimal places of significance)? If
the mean of the boys score was lower than the mean of the girls score can
she reject her null hypothesis? Yes or No.

2) Inspection of student data generated during pre/post treatment surveys
shows that among 10 subjects, 7 had higher scores after an experimental
treatment, 2 had lower scores, and 1 score did not change. Using the
traditional method of hypothesis testing, we need to determine if the
experimental course has any effect. Use an alpha level of 0.01. If the
computed test statistic is 2.36, what is the critical value (2 decimal
places of significance, and did the experimental course make a
symmetry is offline  

  My Math Forum > College Math Forum > Advanced Statistics

critical, finding, values

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Critical Numbers and Extreme Values math999 Calculus 2 March 25th, 2013 09:31 AM
Critical Values Sodapop5000 Advanced Statistics 13 May 2nd, 2012 09:00 PM
t values and critical region tsl182forever8 Advanced Statistics 1 March 27th, 2012 12:04 AM
Average cost and critical values tsl182forever8 Algebra 1 February 29th, 2012 02:05 PM
Singificance levels, critical values and p-value. Help!!!! oliviagmmc Advanced Statistics 0 May 25th, 2009 02:26 AM

Copyright © 2019 My Math Forum. All rights reserved.