Problem 1)
| A |
B
|
|
21
|
38
|
|
33
|
32
|
|
40
|
56
|
|
37
|
58
|
|
22
|
45
|
|
25
|
46
|
|
39
|
57
|
|
28
|
49
|
|
34
|
43
|
|
25
|
41
|
|
27
|
55
|
A marketing specialist is assessing the effectiveness of two types of formats for TV commercials. Twenty four regular TV watchers are randomly selected and then assigned to watch one of the two formats of a commercial for an imported car. The following data are the scores on a measure for assessing the impact of commercials.
For the data above, test the appropriate hypothesis using the independent t test and alpha=.05.
a) State the hypotheses
b) Set the criterion for rejecting H0
c) Compute the test statistic
d) Interpret the results
e) Show that t^2=F and Tcv^2=Fcv