In order to compare two computer software packages, a manager has 15 individuals use each software package to perform a standard set of tasks typical of those encountered in the office.
statistics
Description
QUESTION
1( 15 MARKS)
In order to compare two computer software packages,
a manager has 15 individuals use each software package to perform a standard
set of tasks typical of those encountered in the office. Of course, in carrying
out the comparison the manager was careful to use individuals who did not have
an established preference of skill with either type of software, and 15
individuals were randomly selected to use software A first while the other 15 used software B first. The time required
to perform the standard set of tasks, to the nearest minute, is reported in
Table 1. Test the null hypothesis that there is no difference between the mean
time required to perform the standard tasks by the two software packages, using
the 5% level of significance.
Table:1
|
Individual |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
|
Software A |
12 |
16 |
15 |
13 |
16 |
10 |
15 |
17 |
14 |
12 |
13 |
14 |
10 |
11 |
15 |
|
Software B |
10 |
17 |
18 |
16 |
19 |
12 |
17 |
15 |
17 |
14 |
17 |
11 |
18 |
15 |
13 |
QUESTION
2 (10 MARKS)
