More Practice Problems: t-Test

November 4, 2008 by  
Filed under Practice Problems, t-test

#4
Which students do significantly better in reading (Words per minute):
High Sch College
7                     5
4                     3
6                     1
6                   11
3                     8
2                     8
1                   13
6                     9
t = 1.77
Which students do significantly better in reading:
#5
Which cars are the safest (accidents):
Foreign Domestic
16             1
14             3
12             9
18           11
12             6
7             1
t = 3.45
Which cars are the safest (accidents):
#6
Which dogs are the meanest (bites per minute):
Big Little
1                   6
4                   3
3                   9
8                 11
2                 16
7                 11
5                 22
3                   7
t = 2.37
Which dogs are the meanest (bites per minute):

Practice Problems: t-Test

November 4, 2008 by  
Filed under Practice Problems, t-test

#1

Calculate am independent t-test for the following data:

X1 X2
6             12
4               4
2               7
3             10
9               5
6               8
5               3

Mean of group 1 _____

Mean of group 2 _____

Difference between the means _____

SS of group 1 _____

SS of group 2 _____

n(n-1) _____

t = _____

How many degrees of freedom (df) at in this study_____

What is the critical value for t (2 tailed, .05 alpha) _____

Is the t significant _____

#2

Calculate am independent t-test for the following data:

X1 X2
15          3
11          5
8          4
12          2
7          6

Mean of group 1 _____

Mean of group 2 _____

SS of X1 _____

SS of X2 _____

t = _____

 

 

#3

Calculate am independen t-test for the following data:

X1 X2
6           3
7           5
6           3
8           2
4           7
11           4

t = _____

How many degrees of freedom (df) at in this study ____

What is the critical value for t (2 tailed, .05 alpha) _____

Is the t significant? _____

 

Answers

 

NOW YOU CHOOSE:
Day 8: Student’s t-Test
Bit More About t-Test
Even More About t-Test
How to Calculate t-Test
Practice Problems
More Practice Problems
Word Problems
Sim1
Sim2 Sim3
Sim4 Sim5 Sim6
S
im7 Sim8 Sim9
Basic Facts About t-Test

Vocabulary
Formulas
Quiz 8
Summary