Homework Answers
(a) The hypothesis being tested is:
H0: µ = 7180
Ha: µ < 7180
(b)
| 7.1800 | hypothesized value |
| 6.8194 | mean Data |
| 1.2649 | std. dev. |
| 0.2108 | std. error |
| 36 | n |
| 35 | df |
| -1.710 | t |
| .0480 | p-value (one-tailed, lower) |
Since the p-value (0.0480) is less than the significance level (0.05), we can reject the null hypothesis.
Therefore, we can conclude that the average fee this year is lower than in 2014.
(c) Yes, it is necessary to meet the conditions of a parametric test.
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INN
MARGIN
ROOMS
NEAREST
OFFICE
COLLEGE
INCOME
DISTTWN
1
44.2
3471
2.1
523
12
35
9.4
2
29.8
3567
1.8
140
13.5
42
5.7
3
38.4
3264
1.6
404
22.5
45
4.4
4
54.4
3234
1.1
649
19.5
35
6.5
5
34.5
2730
4
171
17
41
10.5
6
44.9
3003
3.4
402
15.5
37
4.6
7
46
2341
2
580
23
45
7.4
8
50.2
3021
2.6
572
8.5
33
9.3
9
46
2655
3.2
666
22
40
6.7...
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INN
MARGIN
ROOMS
NEAREST
OFFICE
COLLEGE
INCOME
DISTTWN
1
44.2
3471
2.1
523
12
35
9.4
2
29.8
3567
1.8
140
13.5
42
5.7
3
38.4
3264
1.6
404
22.5
45
4.4
4
54.4
3234
1.1
649
19.5
35
6.5
5
34.5
2730
4
171
17
41
10.5
6
44.9
3003
3.4
402
15.5
37
4.6
7
46
2341
2
580
23
45
7.4
8
50.2
3021
2.6
572
8.5
33
9.3
9
46
2655
3.2
666
22
40
6.7...
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