Hypothesis: A is correct
z=15.88 (if separate estimates are used to estimate variance; if pooled estimate is used then z=11.62)
p value=.000
The p value is less than the significance level of alpha=.01, so reject the null hypothesis. There is sufficient/enough evidence to support the claim....placebo.
Conclusion: C is correct
In a study of treatments for very painful "cluster" headaches, 140 patients were treated with oxygen...
In a study of treatments for very painful "cluster" headaches, 153 patients were treated with oxygen and 157 other patients were given a placebo consisting of ordinary air. Among the 153 patients in the oxygen treatment group, 110 were free from headaches 15 minutes after treatment. Among the 157 patients given the placebo, 23 were free from headaches 15 minutes after treatment. Use a 0.05 significance level to test the claim that the oxygen treatment is effective. Complete parts (a)...
In a study of treatments for very painful "cluster" headaches, 154 patients were treated with oxygen and 154 other patients were given a placebo consisting of ordinary air. Among the 154 patients in the oxygen treatment group, 107 were free from headaches 15 minutes after treatment. Among the 154 patients given the placebo, 36 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)...
In a study of treatments for very painful "cluster" headaches, 148 patients were treated with oxygen and 159 other patients were given a placebo consisting of ordinary ar. Among the 148 patients in the oxygen treatment group, 106 were free from headaches 15 minutes after treatment. Among the 159 patients given the placebo. 37 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)...
In a study of treatments for very painful "cluster" headaches, 159 patients were treated with oxygen and 149 other patients were given a placebo consisting of ordinary air. Among the 159 patients in the oxygen treatment group, 126 were free from headaches 15 minutes after treatment. Among the 149 patients given the placebo, 29 were free from headaches 15 minutes after treatment. Use a 0.05 significance level to test the claim that the oxygen treatment is effective. Test the claim...
In a study of treatments for very painful "cluster" headaches, 144 patients were treated with oxygen and 144 other patients were given a placebo consisting of ordinary air. Among the 144 patients in the oxygen treatment group, 106 were free from headaches 15 minutes after treatment. Among the 144 patients given the placebo, 31 were free from headaches 15 minutes after treatment. Use a 0.05 significance level to test the claim that the oxygen treatment is effective. Complete parts (a)...
3. In a study of treatments for very painful "cluster" headaches, 150 patients were treated with oxygen and 148 other patients were given a placebo consisting of ordinary air. Among the 150 patients in the oxygen treatment group, 116 were free from headaches 15 minutes after treatment. Among the 148 patients given the placebo, 29 were free from headaches 15 minutes after treatment. We want to use a 0.01 significance level to test the claim that the oxygen treatment is...
In a study of woments for very unter" headaches, 16 patients were treated with oxygen and 146 other patients were given a placebo coordinary Among the patients in the skypen treatment group, 123 were free from headaches 15 minutes after treatment Among the 196 ports on the placebo, 28 were free from headaches 15 minutes after treatment the Oscancerved to test the claim that the wygen att etective Complete para toch below a. Test the coming a hypothesis test Consider...
(a) Identify Test Statistic--------------------? (Round to two decimal places as needed) (b) Identify the P Value------------------------? (c) Identify Critical Value-----------------------? (d) Construct appropriate Confidence interval--------------------? (e) State Conclusion-----------------------? In a study of treatments for very painful "cluster" headaches, 159 patients were treated with oxygen and 147 other patients were given a placebo consisting of ordinary air. Among the 159 patients in the oxygen treatment group, 124 were free from headaches 15 minutes after treatment. Among the 147 patients given the...
9.1 question 10 what is the p- value? what is the confidence interval? 9.1 question 10 part 2 what is the p- value? what is the confidence interval? Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 33 of the 39 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 86 of the 99 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on...
1. Identify the test statistic. Z=_____(Round to two decimal places as needed.) Identify the P-value. P=_____(Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is (1)_____ the significance level of α=0.05, so (2)_____ the null hypothesis. There (3)_____ evidence to warrant rejection of the claim that women and men have equal success in challenging calls. b. Test the claim by constructing an appropriate confidence interval. The 95% or 99% confidence interval...