In a study of treatments for very painful "cluster" headaches, 158 patients were treated with oxygen and 142 other patients were given a placebo consisting of ordinary air. Among the 158 patients in the oxygen treatment group, 123 were free from.headaches 15 minutes after treatment. Among the 142 patients given the placebo, 29 were free from headaches 15 minutes after treatment. Use a 0.01 significance level to test the claim that the oxygen treatment is effective. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of patients treated with oxygen and the second sample to be the sample of patients given a placebo. What are the null and alternative hypotheses for the hypothesis test? A. Ho: P₁ P2 H₁ P₁ P2 D. Ho P1P2 H₁ P₁ P2 Identify the test statistic Z= (Round to two decimal places as needed.) B. Ho: P1 P2 H₁ P₁ P2 E. Ho: P₁² P2 H₁: P₁ P2 C. Ho P₁ = P2 H₁ P₁ P2 OF Ho: P₁ = P2 H1 P1
In a study of treatments for very painful "cluster" headaches, 158 patients were treated with oxygen and 142 other patients were given a placebo consisting of ordinary air. Among the 158 patients in the oxygen treatment group, 123 were free from.headaches 15 minutes after treatment. Among the 142 patients given the placebo, 29 were free from headaches 15 minutes after treatment. Use a 0.01 significance level to test the claim that the oxygen treatment is effective. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of patients treated with oxygen and the second sample to be the sample of patients given a placebo. What are the null and alternative hypotheses for the hypothesis test? A. Ho: P₁ P2 H₁ P₁ P2 D. Ho P1P2 H₁ P₁ P2 Identify the test statistic Z= (Round to two decimal places as needed.) B. Ho: P1 P2 H₁ P₁ P2 E. Ho: P₁² P2 H₁: P₁ P2 C. Ho P₁ = P2 H₁ P₁ P2 OF Ho: P₁ = P2 H1 P1
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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9.1 Q 8 ignore this, just to rememebr what question it is.
Transcribed Image Text:In a study of treatments for very painful "cluster" headaches, 158 patients were treated with oxygen and 142 other patients were given a placebo consisting of
Kordinary air. Among the 158 patients in the oxygen treatment group, 123 were free from headaches 15 minutes after treatment. Among the 142 patients given the
placebo, 29 were free from headaches 15 minutes after treatment. Use a 0.01 significance level to test the claim that the oxygen treatment is effective. Complete
parts (a) through (c) below.
a. Test the claim using a hypothesis test.
Consider the first sample to be the sample of patients treated with oxygen and the second sample to be the sample of patients given a placebo. What are the
null and alternative hypotheses for the hypothesis test?
A. Ho P₁ P2
H₁ P₁ P2
D. Ho P1 P2
H₁ P₁ P2
Identify the test statistic
Z=
(Round to two decimal places as needed)
B. Ho: P1 P2
H₁ P₁ P2
E. Ho: P₁² P2
H₁: P₁ P2
C. Ho: P₁ P2
H₁ P₁ P2
F Ho: P₁ = P2
H1 P1 <P2
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