In a random sample of 500 persons in the city A, 300 are found to be consumers of tea. In another sample of 1000 persons from the city B, 550 consume tea, Is there any significant difference between two cities A and B, with. regard to the consumption of tea.

Q: A doctor claims that less than 30% of all persons exposed to a certain amount of radiation will feel…

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Q: A study found that 80% of teenagers use social media on a regular basis. John wants to investigate…

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Q: In a survey of 1000 adult Americans, 45.4% indicated that they were somewhat interested or very…

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Q: A medical researcher says that at least 23% of Canadian adults are smokers.In a random sample of 200…

A: The null hypothesis is a simple statement about the value of the population parameter which is…

Q: A sample of n = 81 scores is obtained from a population with µ = 80 and σ = 27. If the sample mean…

A: Given that, Sample size, n = 81 Z score = +2.33 μ=80 and σ=27

Q: A salesman for a new manufacturer of cellular phones claims not only that they cost the retailer…

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Q: A local college recently made the news by offering foreign language-speaking dorms to its students.…

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Q: In a survey of 1000 adult Americans, 45.9% indicated that they were somewhat interested or very…

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Q: A sample of n = 100 scores is selected from a population with u = 50 and o = 5. If the sample mean…

A: Given Sample Mean: x̄ = 49 Sample Size: n = 100 Population Mean: μ = 50 Population Std Dev: σ =  5…

Q: (a) In a random sample of 500 men from a particular district of UP, 300 are found to be smokers. In…

A: In the first district, Sample size=500Smokers=300 The percentage of smokers is calculated as, P1=No.…

Q: A survey was conducted of newlyweds in a country who have a spouse of a different race or ethnicity…

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Q: A random sample of n, - 16 communities in westem Kansas gave the folloning information for people…

A: Given : Data represents the sample of communities in western Kansas gave the following information…

Q: A smartphone manufacturer admits that 12% of the smartphones they make have defects that could…

A: Given Data: 'X' is the number of smartphones manufactured that have defects p=0.12 n=20   X~…

Q: In a random sample of 1000 persons from U.P. 510 were found to be consumers of cigarettes. In…

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Q: A consumer agency wants to determine whether there is a major difference between the proportions of…

A: Introduction: Denote p1, p2 as the true population proportions of cars of model and model 2,…

Q: A sample of n=24 is selected from a population = 120 and σ = 40.  If the sample mean is 130, what is…

A: It is given that the population mean, μ=120 and standard deviation, σ=40. For the sample size of 24,…

Q: The US National Survey on Drug Use and Health reports that 4.8% of persons 12 and older regu- larly…

A: p=0.048n=900x=54p⏞=xn=0.06 d) The test statistics is…

Q: In a random sample of 300 patients with rheumatoid arthritis, 192 of them responded favourably to a…

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Q: In a survey of 500 drivers from the South, 408 wear a seat belt. In a survey of 370 drivers from the…

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Q: A cigarette manufacturing firm claims its brand A of the cigarettes outsells its brand B by 8%.if…

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Q: A medical researcher says that less than 25​% of adults in a certain country are smokers. In a…

A: Given information Total no of adults = 250

Q: A random sample of n = 49 scores is obtained from a population with σ = 14. If the sample mean is…

A: It is given that  n=49 σ = 14 Population mean =μ Sample mean,x=4.5+μ

Q: Opinion Research has said that 49.46% of U.S. adults have purchased life insurance. Suppose that for…

A: Proportion z_test: If the given sample size is more than 30 then that is a large sample test. z test…

Q: A second-stage smog alert has been called in a certain area of Los Angeles County in which there are…

A: If the sample size if fixed and the experiment drawn with replacement, the experiment follows…

Q: In a previous poll, 35% of adults with children under the age of 18 reported that their family ate…

A: It is given that 35% of adults with children under the age of 18 reported that their family ate…

Q: A smartphone manufacturer admits that 12% of the smartphones they make have defects that could…

A: 1. Given that X=the number of smartphones manufactured by this company that have defects that could…

Q: ABUlvey was conducted of newlyweds in a country who have a spouse of a different race or ethnicity…

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Q: The president of a local college reported that more than 25% of the students received a…

A: Solution: State the hypotheses Null hypothesis: That is, proportion of the students have…

Q: A Survey was conducted of newlyweds in a country who have a spouse of a different race or ethnicity…

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Q: A survey found that 76% of the men questioned preferred computer-assisted instruction to lecture and…

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Q: a. In order to check for the possible relationship between drinking orange juice and protection…

A: Test of association We will use Chi square test of association for this problem.  Null hypothesis:…

Q: A study at a college in the west coast reveals that, historically, 45% of the students are minority…

A: Given,n=75p=0.45mean(μp^)=p=0.45standard deviation(σp^)=p^(1-p^)nstandard…

Q: In a survey of 1150 adult males, 805 said they use the Internet. In a survey of 1050 females, 746…

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Q: In a previous poll, 35% of adults with children under the age of 18 reported that their family ate…

A: Given information n = 1088, x = 361

Q: m sample of 500 men from a particular district of UP, 300 are found to be smokers. In one of 1000…

A: Given: n1=500 n2=1000 x1=300 x2=550

Q: A local jam production company is confident that 60% of the population will like its new grapefruit…

A: Here events are independent.

Q: A survey of 1000 adults from a certain region​ asked, "If purchasing a used car made certain…

A:

Q: In a random sample of 1022 U.S. adults, 480 think that the U.S. government is doing too little to…

A: Hypotheses:   Here p1 and p2 be the two proportions. The aim is to check whether p1= p2. The null…

Q: A random sample of n = 9 scores is obtained from a population with µ = 50 and σ = 9. If the sample…

A: Given, Mean = 50 Standard deviation = 9   Sample size = 9 Sample Mean = 53   The objective is to…

Q: A medical researcher says that 25% of U.S. adults are smokers. In a random sample of 272 US. adults,…

A:

Q: A survey was conducted of newlyweds in a country who have a spouse of a different race or ethnicity…

A: Consider that p1 is the true proportion of newlyweds of Ethnicity A who have a spouse of a different…

Q: In a random sample of 1022 Canadian adults, 480 think that the Canadian government is doing too…

A:

Q: n a survey of 1000 adult Americans, 45.7% indicated that they were somewhat interested or very…

A: Solution: Given information: n= 1000  Sample size  p^= 0.457  Sample proportion p= 0.50 Population…

Q: A random sample of 600 people from a certain district were questioned and the results indicated that…

A:

Q: In a random survey, 20 seventth graders and 32 eighth graders are asked thrir preference on playing…

A: Total seventh grade students = 20 Total eighth grade students  = 32 Total students who prefer tennis…

Q: In order to determine whether there are significant differences in the durability of three makes of…

A: State the null and alternative Hypotheses:   Null Hypothesis:   H0: The  mean durability of three…

Q: 3 out of 4 american adults under age 35 have eaten pizza for breakfast. if a random sample of 20…

A: Let the R.V X denotes the number of adults eaten pizza for breakfast and it follows the binomial…

Q: 6. In a survey of 460 drivers from the South, 394 wear a seat belt. In a survey of 340 drivers from…

A: 6. (a) The hypothesis is, Null hypothesis: H0:p1≤p2 Alternative hypothesis: Ha:p1>p2 Correct…

Q: 20% of Australian adults suffer from allergies. Given a random sample of ten adults, what is O ()"

A: We have to find given probability.