How big is your family? A survey asked a sample of 2780 adults how many children they had, and also how many siblings (brothers and sisters) they had. The results are summarized in the following contingency table. Siblings 0 1 2 3 More than 4 Send data to Excel Part: 0/2 Part 1 of 2 Siblings 0 1 2 3 0 63 177 176 119 56 More than 4 60 (a) Compute the expected frequencies under the null hypothesis. Round your answers to two decimal places. 0 4 57.13 1 20 61 61 42 15 23 58.36 176.60 176.72 n 118.36 40.36 20.74 Number of Children 2 3 36 16 103 45 102 67 33 30 34.66 61.25 102.35 19.90 Number of Children 46 30 17 12 2 3 100.71 67.46 32.56 33.26 45.80 4 8 30 27 18 13 14 15.51 10.28 30.18 14.88 4 30.35 More than 4 5 21 18 12 5 9.65 3 9.86 More than 4 5.98 29.86 17.37 17.66 20.00 11.64 5.62 5.74
How big is your family? A survey asked a sample of 2780 adults how many children they had, and also how many siblings (brothers and sisters) they had. The results are summarized in the following contingency table. Siblings 0 1 2 3 More than 4 Send data to Excel Part: 0/2 Part 1 of 2 Siblings 0 1 2 3 0 63 177 176 119 56 More than 4 60 (a) Compute the expected frequencies under the null hypothesis. Round your answers to two decimal places. 0 4 57.13 1 20 61 61 42 15 23 58.36 176.60 176.72 n 118.36 40.36 20.74 Number of Children 2 3 36 16 103 45 102 67 33 30 34.66 61.25 102.35 19.90 Number of Children 46 30 17 12 2 3 100.71 67.46 32.56 33.26 45.80 4 8 30 27 18 13 14 15.51 10.28 30.18 14.88 4 30.35 More than 4 5 21 18 12 5 9.65 3 9.86 More than 4 5.98 29.86 17.37 17.66 20.00 11.64 5.62 5.74
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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Question
How big is your family? A survey asked a sample of adults how many children they had, and also how many siblings (brothers and sisters) they had. The results are summarized in the following contingency table .
Compute the expected frequencies under the null hypothesis. Round your answers to two decimal places

Transcribed Image Text:How big is your family? A survey asked a sample of 2780 adults how many
children they had, and also how many siblings (brothers and sisters) they
had. The results are summarized in the following contingency table.
Siblings
0
1
2
3
4
More than 4
Send data to Excel
Part: 0 / 2
Part 1 of 2
Siblings
0
1
2
3
4
0
63
177
176
119
56
More
than 4
60
0
176.60
176.72
1
20
61
61
57.13
42
15
23
58.36
(a) Compute the expected frequencies under the null hypothesis. Round
your answers to two decimal places.
1
20.74
118.36 40.36
Number of Children
2
3
36
16
103
102
67
33
30
2
Number of Children
45
46
30
17
34.66
61.25 102.35 45.80
100.71
12
67.46
32.56
3
15.51
4
8
30
19.90 33.26 14.88
27
18
13
14
4
10.28
30.35
29.86
30.18
20.00
□ 9.65
More than 4
9.86
5
21
18
12
5
3
More
than 4
5.98
17.66
17.37
11.64
5.62
5.74
X
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