4. A corporate lawyer wonders whether the vigor of antitrust enforcement differed in the 2010s compared to the 2000s. A sample of 10 firms is selected from the Fortune 500 list, and the data of table below are collected. Make an appropriate hypothesis test at the 5 percent level of significance using sign test. Number of Indictments (Charges) Firm 2000s 2010s A 5 7 6 8 C 2 3 7 E 10 9 F 15 20 G 9 18 12 7 8 12 3 7

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4. A corporate lawyer wonders whether the vigor of
antitrust enforcement differed in the 2010s compared
to the 2000s. A sample of 10 firms is selected from the
Fortune 500 list, and the data of table below are
collected. Make an appropriate hypothesis test at the 5
percent level of significance using sign test.
Number of Indictments (Charges)
Firm
2000s
2010s
A
5
7
В
8
C
2
3
D
7
9
10
9
F
15
20
G
18
H
12
7
12
3
7
Transcribed Image Text:4. A corporate lawyer wonders whether the vigor of antitrust enforcement differed in the 2010s compared to the 2000s. A sample of 10 firms is selected from the Fortune 500 list, and the data of table below are collected. Make an appropriate hypothesis test at the 5 percent level of significance using sign test. Number of Indictments (Charges) Firm 2000s 2010s A 5 7 В 8 C 2 3 D 7 9 10 9 F 15 20 G 18 H 12 7 12 3 7
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