Chapter 12 Problems
1. Calculate an F ratio for the following four-group deign. Do you accept or reject the null
hypothesis? (F ratio=Vb/Vw)
Table 1
Four-Group Design
A
B
C
3
6
7
4
7
8
5
6
7
4
7
8
5
6
6
D
9
9
8
10
12
Table 2
Anova: Single Factor MS Excel

Chapter 13 Problems
1. A researcher is interested in whether a significant trend exists regarding the popularity of
certain work shifts among police officers. A random sample of 60 uniformed police
officers is selected from a large metropolitan police for

1. The correlation between IQ and the verbal SAT score among the seniors at West High
School is .90; it is significant. The mean IQ is 100 with an estimated standard deviation
of 10. The mean SAT score is 500 with an estimated standard deviation of 100. P