Identify the null hypothesis, alternative hypothesis, test statistic, P-value or critical value, state the conclusion aboutthe null hypothesis as well as the final conclusion about the claim1. The drug OxyCotin (oxycodone) is used to treat pain, but it is dangerous because it is additive and can be lethal. Inclinical trials, 227 subjects were treated with OxyContin and 52 of them developed nausea. Use a 0.05 significancelevel to test the claim that more than 20% of OxyCotin users develop nausea. Does the rate of nausea appear tobe too high?2. In a study of 1228 randomly selected medical malpractice lawsuits, it was found that 856 of them were dropped ordismissed. Use a 0.01 significance level to test the claim that most medical malpractice lawsuits are dropped ordismissed. Should this comforting to physician?3. A random sample of 860 births in New York State included 426 boys. Use a 0.05 significance level to test the claimthat 51.2 % of newborn baby are boys. Do the result support the belief that 51.2% of newborn babies are boys?4. A Pew Research Center Poll of 1060 teens aged 13 to 17 showed that 57% of them have made new friends online.Use a 0.01 significance level to test the claim that half of all teens have made new friends online.

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Answered: Identify the null hypothesis,…

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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The city manager measures response times by looking at the proportion of calls for which paramedics arrived within 8 minutes. Last year, paramedics arrived on scene 75% of the time within 8 minutes. The city manager wants to determine whether they have done significantly better this year. State appropriate null and alternative hypotheses for the city manager to test. Describe a Type I and Type II error in this setting. Explain the consequences of each type of error. Which is more serious: a Type I error or a Type II error? Justify your answer
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Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 40 of the 46 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 87 of the 104 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. Test the claim using a hypothesis test. Consider the first sample to be the sample of subjects treated with echinacea and the second sample to be the sample of subjects treated with a placebo. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1≥p2 H1: p1≠p2 B. H0: p1=p2 H1: p1≠p2 C. H0: p1≠p2 H1: p1=p2 D. H0: p1=p2 H1: p1<p2 E. H0: p1=p2 H1: p1>p2 F. H0: p1≤p2 H1: p1≠ Identify the test statistic. Z = (Round to two decimal places as needed.) P-value= The P-value is (Less than/ greater than) the significance level of α=0.05,…
Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 6105 patients treated with this drug, 158 developed the adverse reaction of nausea. Use a 0.05 significance level to test the claim that 3% of users develop nausea. Does nausea appear to be a problematic adverse reaction? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. H0:p=0.03 H1:p≠0.03 B. H0:p=0.03 H1:p>0.03 C. H0:p≠0.03 H1:p=0.03 D. H0:p=0.03 H1:p<0.03 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test Is.... (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is.... (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. A. Fail to reject H0.There is sufficient evidence to warrant rejection of the claim that 3% of users…
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