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Question
The floor exercise is a commonly shared event between the Women’s and Men’s Artistic Gymnastics programs. Let’s compare the floor exercise scores of the female gymnasts and male gymnasts. To do this, we will consider the 2007, 2011, and 2015 results as sample data.
Individual All-Around Finals
We will first look at the floor exercise scores in the Individual Female All-Around Finals and in the Individual Male All-Around Finals.
i. Find the sample mean and sample standard deviation for the floor exercise scores in the Individual Female All-Around Finals and the Individual Male All-Around Finals.
ii. Construct a 95% confidence interval for the difference in population mean floor exercise scores between female and male gymnasts in the Individual All-Around Finals. (Hint: Use the results of i. and use the t-distribution.)
iii. Using the confidence interval in part iii., can we infer at the 5% significance level that the population mean floor exercise score in the Individual All-Around Finals is different for female gymnasts and male gymnastics?
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11.75
10.85
422
12.2
724
12.1
10.75
ZOF
11.05
10.07
10.05
DAF
9.15
DOF
10.05
9.75
45
10.45
Dive
7
9.4
8.55
7
6.7
7.95
9.3
7.75
Se
7.25
2
5.35
3.65
13.65
14.0
12.8
13.95
13.2
13.2
12.55
12:59
13.1
13.1
14.45
12
12
12.1
13.1
12.1
12.1
11.65
12.75
12.5
12.5
144
11.1
ww
11.4
102
10.2
12.15
11.35
10.7
44.6
11.6
442
11.3
44
11
8.9
9.05
8.95
7.1
9.15
7.2
Beam
14.75
14.1
13.65
13.75
14.7
13
13.3
20
12.5
12.7
DE
13.8
19:0
6.75
7.7
5.3
13.6
19.0
13.1
19:1
12.4
12.4
13.8
$19:0
14.55
17.00
12.25
12.20
13.0
12.3
12.3
12.25
14:40
12.45
12:40
11.35
11.35
11.9
11.9
12.65
12.1
10.95
10.85
11.1
8.2
19€
10.3
19:0
9.9
9.35
9:39
9.5
8.85
www
7.6
7:0
12.7
14.1
13.05
9:00
13.9
19:9
14.6
12.65
2:00
13.85
3:00
13.5
19:9
14.3
Akce
13.1
13.1
12.85
2:00
14.3
14:0
13.2
19:€
12.3
14:3
12.7
14:1
12.5
14.0
12.4
14:4
12.4
12.9
15.05
12.55 15.05
13.35
14.05
11.7
1.15
11.15
9.9
OF
12.05
128
12.6
44.46
11.15
740
11.2
12.25
12.35
40 FE
10.55
11.6
700
12.2
TOF
10.5
9.4
10.25
75
CE
9.65
7
8.45
7.6
9.3
8.7
15.3
14.45
14.4
14.9
14.35
14.35
14.35
14.35
14.25
14.25
13.85
12.25
13.7
13.7
15
19
13.45
14.55
13.85
12.9
12.95
14.3
14.3
137
13.7
14.65
133
13.3
131
13.1
K
Floor
15
14.85
15.2
14.25
13.85
19:00
S
13.6
119.9
13.7
Hom
14.05
14:00
12.7
en
14.05
14:00
13.65
19:09
13.25
19.40
13.25
19.40
13.55
19.99
12.95
12.99
13.55
13.55
13.05
13.09
11.85
11:09
13.2
19:4
11
13.8
13.8
12.25
12.1
12.1
12.1
11.6
11.9
12.05
10.75
19:10
11.2
10.55
11.1
10.45
9.6
13.85
14.25
14.8
14
14.5
13.75
TO
13.55
19:00
12.55
13.2
15.2
13.7
15.1
13.35
20
13.25
20
12.95
14:59
13.4
13.4
13.35
133
13.3
122
12.3
12 EE
13.55
700
12.8
12.4
757
13.1
12.3
700
12.6
12 65
12.65
11.9
405
10.2
12.05
12.05
14:09
11.7
10.4
10.75
2:0
9.8
9.6
Z
10.75
9.75
9.55
9.05
14.65
Spe
14.
15.35
14.6
14.3
14.75
13.65
13.7
13.
14.25
13.8
141
14.1
136
13.6
14
14
14.25
132
13.2
144
13.25
137
13.7
13.15
13.05
12.45
13.45
424
12.4
12.2
13.3
12.75
127
13.7
134
13.4
127
116
11.6
11.6
12.7
42
13
124
12.4
45
11.45
10.2
10
11
10.9
10.35 10.35
9.55 11.75
9.6
11.3
10.25
10.3
10.6
10.9
122
12.2
126
12.6
14.65
11.55
Final Score
59.55
58.65
58.35
56.15
55.95
20:00
54.90
54.40
54.35
54.30
34:00
53.45
09:40
53.35
53.39
53.25
99.29
53.25
99.40
53.10
99.10
52.95
34.90
52.55
34.99
52.15
51.75
50.25
30:40
49.85
49:09
49.70
49.70
49.30
49.30
49.05
49.05
48.35
46.85
45.85
45.05
43.70
10:10
43.65
1410:00
42.30
174.00
40.40
MOTO
39.90
29:00
37.00
37:00
36.45
20:40
25.50
25.05
29:00
55.
99:10
54.85
37:00
54.45
SW.YO
54.35
37.00
54.25
ww.40
53.70
99:10
52.85
04:09
51.85
91:09
51.85
91:09
91:20
50.70
50.35
50.15
50.15
49.40
49.00
49 05
48.95
AD TE
48.75
49 25
48.35
47.25
47.35
ADF
47.25
46. 30
46.70
70.00
46.20
45.75
TE OF
45.65
www
44.15
42 46
43.15
700
40.80
700
40.50
39.40
39.10
Come
38.30
20:00
35.50
20:00
35.40
20.00
32.80
20
58.05
99:09
57.85
31.0
57.70
57.30
56.85
56.85
56.15
56.15
55.80
55.80
55.50
55.50
55.40
55.40
55.05
55.05
54.75
54.75
54 55
54.55
54 45
54.45
54.30
54.30
54.10
54.10
53.70
53.70
53. 30
53.30
52 55
52.55
52 25
52.35
51.50
51.50
51 45
51.45
64 46
51.15
50 55
50.55
50. 35
50.35
40 BE
49.85
40 10
49.10
49 50
48.50
44 75
44.75
44 45
44.45
42.35
41.75
41.35
41.10
40.35
39.70
38.35
M
Rank
3
4
5
2
6
=
7
2
8
=
9
10
11
20
12
12
13
19
14
14
15
15
16
19
17
+
18
19
19
19
20
20
21
21
22
22
23
23
24
24
25
26
27
55
20
29
31
32
33
35
36
4
=
3
=
4
=
5
6
=
7
=
8
=
9
=
9
=
11
!!
12
13
14
15
16
16
17
70
18
10
19
20
20
21
20
22
55
23
=
24
7
25
77
26
=
27
7
28
7
29
=
30
=
31
32
33
34
35
36
=
=
4
5
5
6
16
7
2
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
22
23
24
24
25
25
26
26
27
27
28
28
29
30
31
32
33
34
35
36"
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