a. Obtain and interpret a two-sided exact P-value. b. Obtain and interpret the one-sided mid P-value. Give advantages of this type of P-value, compared with the ordinary one.

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From Agresti book problem 2.31, perform a Fisher’s exact test by hand
2.30
2.31
Table 2.17 contains results of a study comparing radiation therapy with surgery
1 against
in treating cancer of the larynx. Use Fisher's exact test to test Ho: 0
=
Ha:
1. Interpret results.
Refer to the previous exercise.
a. Obtain and interpret a two-sided exact P-value.
b. Obtain and interpret the one-sided mid P-value. Give advantages of this
type of P-value, compared with the ordinary one.
PROBLEMS
Table 2.17. Data for Problem 2.30
Cancer
Controlled
Surgery
Radiation therapy
21
15
Cancer Not
Controlled
2
Source: W. Mendenhall et al., Int. J. Radiat. Oncol. Biol. Phys., 10:
357-363, 1984. Reprinted with permission from Elsevier Science Ltd.
63
Transcribed Image Text:2.30 2.31 Table 2.17 contains results of a study comparing radiation therapy with surgery 1 against in treating cancer of the larynx. Use Fisher's exact test to test Ho: 0 = Ha: 1. Interpret results. Refer to the previous exercise. a. Obtain and interpret a two-sided exact P-value. b. Obtain and interpret the one-sided mid P-value. Give advantages of this type of P-value, compared with the ordinary one. PROBLEMS Table 2.17. Data for Problem 2.30 Cancer Controlled Surgery Radiation therapy 21 15 Cancer Not Controlled 2 Source: W. Mendenhall et al., Int. J. Radiat. Oncol. Biol. Phys., 10: 357-363, 1984. Reprinted with permission from Elsevier Science Ltd. 63
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