1. One of the cheetahs I've worked with, Masika², was unfortunately born with fused wrists and floating kneecaps. To support Masika in her mobility, every other week she is given an Adequan injection, a shot that is argued to help relieve non-infection related arthritis. Adequan has only been fully approved for dogs, so to see if the injection reduces the occurrence of arthritis for cats, Ms. Peck puts together a small study to compare arthritis in cats who get the Adequa with those who don't. In the preliminary study of 100 subjects with arthritis, 50 were randomly assign receive Adequan injections, and 50 were randomly assigned to receive a saline injection. The cats resp the end of the study are summarized in the table below.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.4: Applications
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1. One of the cheetahs I've worked with, Masika², was unfortunately born
with fused wrists and floating kneecaps. To support Masika in her mobility,
every other week she is given an Adequan injection, a shot that is argued
to help relieve non-infection related arthritis. Adequan has only been fully
approved for dogs, so to see if the injection reduces the occurrence of
arthritis for cats, Ms. Peck puts together a small study to compare arthritis in cats who get the Adequan injection
with those who don't. In the preliminary study of 100 subjects with arthritis, 50 were randomly assigned to
receive Adequan injections, and 50 were randomly assigned to receive a saline injection. The cats responses at
the end of the study are summarized in the table below.
Arthritis Relief No Arthritis Relief Total
Adequan Injection
35
15
50
Saline Injection
30
20
50
Total
62
38
100
Transcribed Image Text:1. One of the cheetahs I've worked with, Masika², was unfortunately born with fused wrists and floating kneecaps. To support Masika in her mobility, every other week she is given an Adequan injection, a shot that is argued to help relieve non-infection related arthritis. Adequan has only been fully approved for dogs, so to see if the injection reduces the occurrence of arthritis for cats, Ms. Peck puts together a small study to compare arthritis in cats who get the Adequan injection with those who don't. In the preliminary study of 100 subjects with arthritis, 50 were randomly assigned to receive Adequan injections, and 50 were randomly assigned to receive a saline injection. The cats responses at the end of the study are summarized in the table below. Arthritis Relief No Arthritis Relief Total Adequan Injection 35 15 50 Saline Injection 30 20 50 Total 62 38 100
(a) Do the data from this study indicate, at the 5% significance level, that the Adequan injection helps reduce
the proportion of cats with arthritis compared to the saline injection? (The conditions for inference have
been checked and verified)
(b) Based on your conclusion in part (a), which type of error, Type I or Type II, is possible? Describe the
consequence of this error in the context of this study.
Transcribed Image Text:(a) Do the data from this study indicate, at the 5% significance level, that the Adequan injection helps reduce the proportion of cats with arthritis compared to the saline injection? (The conditions for inference have been checked and verified) (b) Based on your conclusion in part (a), which type of error, Type I or Type II, is possible? Describe the consequence of this error in the context of this study.
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