In a random sample of 800 adult Americans, 605 of them were nonsmokers.  The following question was asked:  Should the federal tax on cigarettes be raised to pay for health care reform? In this sample 351 nonsmokers and 41 smokers answered "yes."  Let p1 and p2 be the proportions of nonsmokers and smokers, respectively, in the general population of adult Americans who would answer "yes" to the question.  Use a significance level of 0.01 and an appropriate confidence interval to test the claim that there is no difference in the opinion of the two groups.

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Q: central airlines claims that the median price of a round-trip ticket from chicago, illinois, to…

A: Sample size(n)=25 Median price=606 The number of tickets below $606 =11

Q: Past studies have indicated that the percentage of smokers is estimated to be about 33%. Given the…

A:

Q: November 2011, the median asking price for a home in Seattle, Washington was $279,000. Which of the…

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A:

Q: In an effort to understand the feelings of American adults about the government, one thousand…

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Q: In each part, specify what type of analysis you might use. a. To study the effect of one factor on…

A: The study is an effect of one factor on the mean of a response variable.

Q: In the most recent Rasmussen Report on congressional performance, a random sample of registered…

A:

Q: Which do you think would have more variation: the GPA's of students in an honors college with a…

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Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: It is given that Favourable cases, x1 = 386Sample size, n1 = 590Favourable cases, x2 = 363Sample…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

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A: Sample size n1=297 , n2=311

Q: The recidivism rate for convicted sex offenders is 16%. A warden suspects that this percent is…

A: Given : x = 72 n = 378 p^ = xn p^ = 72378 p^ = 0.191 α = 0.1 a) For this study, we should use…

Q: A researcher claims that based on the information obtained, 17% of young people ages 9-19 are obese.…

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Q: A student counted the colors of 293 plain​ M&M's and 310   peanut​ M&M's. The results are recorded…

A: Step 1: Here we have to test whether 2 populations have same proportion. The test here used is,test…

Q: Smartphone Ownership. The Pew Internet&American Life Project conducted a survey of smartphone…

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A: Test is that whether the distribution of blood type is different for millionaires.

Q: o dream in black and white is greater than the proportion for those under 25. Complete parts (a)…

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Q: Let M,, M2 and M, be the median sales for aisle locations of front, middle and rear, respectively.…

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Q: Suppose you want to estimate the percentage of videos on YouTube that are cat videos. It is…

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A:

Q: r no difference between the population m hat the population means differ?

A: given: H0:μd=0versusHa:μd≤0

Q: Suppose a survey of 954 homeowners found that more than 24​% bought flood insurance. Which part of…

A: In a survey of 954 homeowners, more than 24​% bought flood insurance.

Q: Determine the point estimate for the difference in mean standardized scores for the eastern and…

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Q: In a survey conducted by Wright State University, senior high school students were asked if they had…

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Q: 1. A Pew Poll taken in 2010 surveyed 830 randomly selected people ages 18 – 29, and found that 166…

A:

Q: Is the proportion of twin births among teenage mothers different from the overall figure?

A: It is given that Sample size n = 469 Number of twin births, X = 7 Level of significance = 10% = 0.10

Q: A. Determine the test statistic  B. Find the p-value

A: CheesecakeSample size, Sample mean, Sample standard deviation, Organic fruit saladSample size,…

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Q: After looking at MLs, the researcher decides to look at the entire sample. In her analysis the…

A: We use the given output to find out the solution.

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 52% of the…

A: Givensample size(n)=100p^=0.47

Q: he Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a…

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Q: A researcher is using a repeated-measures design to test for mean differences among four treatment…

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Q: An online shop owner believes that 85% of her customers will want to go into a real store. She…

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Q: 1. A marketing manager for a cell phone company claims that more than 35% of children aged 10 – 11…

A: From the provided information, Sample size (n) = 5000 Out of which 1805 had cell phones. Level of…

Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

A: Variables are of different types. The correct classification of variables and the identification of…

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.