In a clinical trial of a drug intended to help people stop​ smoking, 126 subjects were treated with the drug for 13 ​weeks, and 12 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.

Q: A team of researchers conducted 100 independent hypothesis tests using a significance level of a =…

A: Given that  Total number of independent hypothesis tests done = 100 Significance level (α) = 0.05 =…

Q: claimed that 3% of professional golfers are left-handed. Believing this claimed value is incorrect,…

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Q: Suppose 225 subjects are treated with a drug that is used to treat pain and 55 of them developed…

A: The hypotheses are given below: Null hypothesis: H0: p=0.20. Alternative hypothesis: Ha:p>0.20.…

Q: A newsletter publisher believes that less than 50% of their readers own a laptop. For marketing…

A: Null Hypothesis: H0: p = 0.49 Alternative Hypothesis: Ha: p < 0.49 The decision is  to reject the…

Q: The null and alternative hypotheses are:

A: Here , we want to find the null and alternative hypothesis. Here , we use paired t-test because the…

Q: Last year, television station WXYZ's share of the 11 P.M. news audience was approximately equal to,…

A: Introduction :-  Given :-  Surveyed a random sample of 400 11PM news viewers and found that 146…

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

A: From the provided information, Population proportion (p) = 0.25 Sample size (n) = 2099 Out of which…

Q: Many financial institutions are unwittingly training their online customers to take risks with their…

A:

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

A: 1. Given: n=2420x=684p=0.3 The type of test used is one proportion z test to test population…

Q: In a clinical trial of a drug intended to help people stop smoking. 129 subjects were treated with…

A: Given information- Power of the test, 1 – β = 0.96   Hypothesis formulation- Null Hypothesis, p =…

Q: A reader wrote in to the opinion column of a sports magazine to say that his grandfather told him…

A: From the given information, the claim is the proportion of the winning team scores more runs in one…

Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A:

Q: In a clinical trial of a drug intended to help people stop​ smoking,134subjects were treated with…

A: Given, In a clinical trial of a drug intended to help people stop​ smoking,134subjects were treated…

Q: In a clinical trial of a drug intended to help people stop smoking, 127 subjects were treated with…

A: Given that Level of significance = 0.05 Power of test = 0.95 Alternate value of p = 0.16

Q: A television executive claims that the percent of households that watch the Macy's parade on…

A:

Q: In a clinical trial of a drug intended to help people stop​ smoking, 134 subjects were treated with…

A:

Q: In a survey of families in which both parents work, one of the questions asked was, "Have you…

A: Given Information: Sample size of men (n1) = 200  Sample size of women (n2) = 200  Proportion of men…

Q: In a survey by Bea et al., it was found that 218 of 1,062 urban residents had a history of allergic…

A: Given: n1=1062 n2=1000 x1=218 x2=728

Q: In a clinical trial of a drug intended to help people stop​ smoking, 127 subjects were treated with…

A: The power of the test, in this case, is 1—β= 0.95 (that is, the complement of β), indicates the…

Q: Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

A: From the given information, n1=559, x1=445n2= 544, x2 =459α =0.05 Let p1 and p2 are proportions of…

Q: In 1995, it was determined that 78% of US citizens supported a ban on household aerosols.  Thinking…

A: Given that p=78%=0.78

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

A: Given: n=2422x=666p=0.30α=0.01

Q: In a random sample of 315 people 90 of them were smokers. Based on the above sample test whether the…

A:

Q: It has been determined that 37 out of 100 adult Americans that did not attend college believe in…

A: There are two independent samples which follows normal distribution. We have to test whether the…

Q: In a clinical trial of a drug intended to help people stop​ smoking, 134 subjects were treated with…

A: Given: p=0.08Power = 96%size of sample =134True proportion p^= 0.16

Q: The value for the test statistic for a left-tailed one mean z-test is z= -1.19. Determine the…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

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Q: What decision should the researcher make based on the results of the hypothesis test

A: Test is that whether or not the proportion of high school athletes who go on to play sports in…

Q: In a clinical trial of a drug intended to help people stop​ smoking, 134 subjects were treated with…

A: The power of the test, in this case is 1—β= 0.96 (that is, the complement of β), indicates the…

Q: A college administrator wanted to know if the proportion of students who request online classes, lab…

A: From the given information the p-value of 0.1347 and the level of significance is 0.05.

Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: A cancer research group surveys a random sample of 400 women more than forty years old to test the…

A: Sample size , n = 400 women more than forty years old 140 women in the sample respond affirmatively…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 30%. Given the…

A: The population proportion of smokers is denoted by p. The claim is “The percentage of smokers has…

Q: Step 1 of 3 :   State the null and alternative hypotheses for the test. Fill in the blank below.…

A: Given : n1= 500 n2= 250 significance level, 0.05 sample proportion p̂1…

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

A: Given Population proportion P = 0.30 X : No of patients experienced nausea = 684  sample size n =…

Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A: Given problem is :

Q: In a clinical trial of a drug intended to help people stop smoking, 126 subjects were treated with…

A: The power of test is defined as rejecting the null hypothesis when the alternative is true. It os…

Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A: The given claim is that the proportion of those favoring stricter gun control has changed from 0.55.…

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

A: p = 0.25 Sample proportion = 490/2099 = 0.23 n = 2099

Q: According to a very large poll in 2015, about 90% of homes in California had access to the internet.…

A: All three condition conditions will apply

Q: With the null hypothesis that a suspect is innocent, an investigation concluded that the suspect…

A: The probability of determining a test statistic value at least as extreme as the observed value…

Q: In a clinical trial of a drug intended to help people stop​ smoking, 129 subjects were treated with…

A: The power of the test, in this case, is 1—β= 0.96 (that is, the complement of β), indicates the…

Q: Suppose the p-value of a hypothesis test is .0783. At the alpha=.05 level of significance, should…

A: Determine the decision rule. The decision rule is stated below as follows:   From the information,…

Q: Suppose 225 subjects are treated with a drug that is used to treat pain and 55 of them developed…

A:

Q: In a clinical trial of a drug intended to help people stop smoking, 130 subjects were treated with…

A: The power of test is defined as the rejecting the null hypothesis when the alternative hypothesis is…

Q: In a clinical trial of a drug intended to help people stop smoking, 125 subjects were treated with…

A: Given: The clinical trial results in having 125 subjects with 11 weeks based on 10 subjects that get…

Q: Are freshmen psychology majors less likely to change their major before they graduate compared to…

A: Given that,sample one, x1 =353, n1 =665, p1= x1/n1=0.5308sample two, x2 =371, n2 =664, p2=…

Q: A survey and research company claims that TV network A garnered 31% audience satisfaction. To test…

A: Given,sample size(n)=2000claim: TV network A garnered 31% audience satisfaction.α=0.05

Q: In a clinical trial of a drug intended to help people stop smoking, 127 subjects were treated with…

A: It is given that Power = 0.95 Alternative value of p = 0.18 The power of test is defined as…

Q: In a clinical trial of a drug intended to help people stop​ smoking, 135 subjects were treated with…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.