Concept explainers
Interpreting Power Chantix (varenicline) tablets are used as an aid to help people stop smoking. In a clinical trial, 129 subjects were treated with Chantix twice a day for 12 weeks, and 16 subjects experienced abdominal pain (based on data from Pfizer, Inc.). If someone claims that more than 8% of Chantix users experience abdominal pain, that claim is supported with a hypothesis test conducted with a 0.05 significance level. Using 0.18 as an alternative value of p, the power of the test is 0.96. Interpret this value of the power of the test.
Learn your wayIncludes step-by-step video
Chapter 8 Solutions
Elementary Statistics (13th Edition)
Additional Math Textbook Solutions
Elementary Statistics Using Excel (6th Edition)
Elementary Statistics: Picturing the World (7th Edition)
Fundamentals of Statistics (5th Edition)
Statistics for Business and Economics (13th Edition)
Statistical Reasoning for Everyday Life (5th Edition)
- What is an experiment?arrow_forwardWhat is meant by the sample space of an experiment?arrow_forwardIn a clinical trial of a drug intended to help people stop smoking, 126 subjects were treated with the drug for 12 weeks, and 15 subjects experienced abdominal pain. If someone claims that more than 8% of the drug's users experience abdominal pain, that claim is supported with a hypothesis test conducted with a 0.05 significance level. Using 0.18 as an alternative value of p. the power of the test is 0.95. Interpret this value of the power of the test. The power of 0.95 shows that there is a % chance of rejecting the That is, if the proportion of users who experience abdominal pain is actually than 0.08. the proportion of users who experience abdominal pain is (Type integers or decimals. Do not round.) hypothesis of p=when the true proportion is actually % chance of supporting the claim that then there is aarrow_forward
- One study of cell phones and the risk of brain cancer looked at a group of 469 people who have brain cancer. The investigators then asked about the use of cell phones. Result: “Our data suggest that the use of hand- held cellular phones is not associated with risk of brain cancer. B . Based on this study, can you determine that cellular use does not CAUSE brain cancer? Why or why not?arrow_forwardA researcher has a hypothesis that a specific drug may have a higher prevalence of side effects among members of the African American population than members of the Caucasian population. Which statistical technique might the researcher want to use when designing a study to test their hypothesis?arrow_forwardIn a clinical trial of a drug intended to help people stop smoking, 132 subjects were treated with the drug for 12 weeks, and 17 subjects experienced abdominal pain. If someone claims that more than 8% of the drug's users experience abdominal pain, that claim is supported with a hypothesis test conducted with a 0.05 significance level. Using 0.16 as an alternative value of p. the power of the test is 0.96. Interpret this value of the power of the test. The power of 0.96 shows that there is a % chance of rejecting the V hypothesis of p= when the true proportion is actually . That is, if the proportion of users who experience abdominal pain is actually, then there is a % chance of supporting the claim that the proportion of users who experience abdominal pain is (Type integers or decimals. Do not round.) than 0,08.arrow_forward
- Labor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by most states as an official holiday. In a poll by Gallup, 1000 randomly selected adults were asked whether they approve of labor unions; 650 said yes. In 1936, about 72% of Americans approved of labor unions. At a 5% level of significance, do the data provide sufficient evidence to conclude that the percentage of Americans who approve of labor unions now has decreased since 1936? Solve using the critical-value approach. Define the parameter we are testing and setup a hypothesis test to see if less than 72% of Americans approve of labor unions currently. Calculate the test statistics for this hypothesis test. What is the critical value for this hypothesis test?arrow_forwardLabor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by most states as an official holiday. In a poll by Gallup, 1000 randomly selected adults were asked whether they approve of labor unions; 650 said yes. In 1936, about 72% of Americans approved of labor unions. At a 5% level of significance, do the data provide sufficient evidence to conclude that the percentage of Americans who approve of labor unions now has decreased since 1936? Solve using the critical-value approach. a. Define the parameter we are testing and setup a hypothesis test to see if less than 72% of Americans approve of labor unions currently. b. Calculate the test statistics for this hypothesis test. c. What is the critical value for this hypothesis test?arrow_forwardAcne is a common skin disease that affects most adolescents and can continue into adulthood. A study compared the effectiveness of three acne treatments and a placebo, all in gel form, applied twice daily for 12 weeks. The study's 517 teenage volunteers were randomly assigned to one of the four treatments. Success was assessed as clear or almost clear skin at the end of the 12 week period. The results of the study can be seen in the table below. Using the appropriate statistical test, determine if there is significant evidence that the four treatments perform differently. If so, how do they compare.arrow_forward
- In a clinical trial of a drug intended to help people stop smoking, 129 subjects were treated with the drug for 12 weeks, and 15 subjects experienced abdominal pain. If someone claims that more than 8% of the drug's users experience abdominal pain, that claim is supported with a hypothesis test conducted with a 0.05 significance level. Using 0.18 as an alternative value of p, the power of the test is 0.96. Interpret this value of the power of the test. The power of 0.96 shows that there is a % chance of rejecting the % chance of supporting the claim that the proportion of users who experience abdominal pain is hypothesis of p = when the true proportion is actually That is, if the proportion of users who experience abdominal pain is actually then there is a than 0.08. (Type integers or decimals. Do not round.) Enter your answer in each of the answer boxes. esc 23 $ delete 1 3 R T Y. Q W E tab 11 K L return G H. J caps lock shift B N C shift command option 00 LLIarrow_forwardInterpreting Power Chantix tablets are used as an aid to help people stop smoking. In a clinical trial, 129 subjects were treated with Chantix twice a day for 12 weeks, and 16 subjects experienced abdominal pain (based on data from Pfizer, Inc.). If someone claims that more than 8% of Chantix users experience abdominal pain, that claim is supported with a hypothesis test conducted with a 0.05 significance level. Using 0.18 as an alternative value of p, the power of the test is 0.96. Interpret this value of the power of the test.arrow_forwardIn a clinical trial of a drug intended to help people stop smoking, 125 subjects were treated with the drug for 12 weeks, and 14 subjects experienced abdominal pain. If someone claims that more than 8% of the drug's users experience abdominal pain, that claim is supported with a hypothesis test conducted with a 0.05 significance level. Using 0.17 as an alternative value of p, the power of the test is 0.95. Interpret this value of the power of the test. The power of 0.95 shows that there is a % chance of rejecting the hypothesis of p = when the true proportion is actually That is, if the proportion of users who experience abdominal pain is actually then there is a % chance of supporting the claim that the proportion of than 0.08. users who experience abdominal pain is (Type integers or decimals. Do not round.)arrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning