According to Nielsen Media Research, of all the U. S. Households that owned at least one television set, 83% had two or more sets.  A local cable Company canvassing the town to promote a new cable service found that of the 300 randomly selected households visited, 240 had two or more television sets.  At  , is there sufficient evidence to conclude that the proportion is less than the one in the report?

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

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

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Q: In the 2019 P&G color report, it was stated that 23% of cars in North America are wnite. TOu wonder…

A: The test hypotheses are given below:

Q: If a hurricane was headed your way, would you evacuate? The headline of a press release states,…

A: Sample size = n = 4625 Sample proportion = p̂ = 0.32

Q: The American Library Association claims that at most 67% of library patrons actually borrow books.…

A:

Q: The National Highway traffic Safety Administration requires each U.S. state to carry out an…

A: The proportions in table are based on observations of over 25000 drivers and passengers.

Q: Because of the increased cost of housing, a national real estate board wants to compare the…

A:

Q: A press release states that "by an overwhelming margin, Americans want to live in a sunny place."…

A: a) Define that p is the proportion of all adult Americans who would prefer to live in a hot climate…

Q: Newborn babies are more likely to be boys than girls. A random sample found 13,573 boys were born…

A: The claim of the test is there is sample evidence that the birth of boys is more common than the…

Q: Approximately 20.5% of the U.S. population 5 years old and older speaks a language other than…

A: sample size is 400 & Population Proportion =0.205

Q: article in the Archives of Internal Medicine reported that in a sample of 244 men, 73 had elevated…

A: Given that  Sample size n1=244 , n2=232 Favorable cases x1=73, x2=44

Q: A restaurant chain would like to measure the proportion of customers who are generally satisfied…

A: There is survey of customers who visited the restaurant about how much they satisfied and we have to…

Q: 2. Is there a difference in the proportion of individuals with food allergies between young children…

A: The sample proportions are The pooled proportion or weighted estimate of p is,

Q: A fall survey of 2 and 4 year college students showed that of 167,000 students who responded, 65,130…

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Q: 2. A survey was targeted at determining if educational attainment affected Internet use. Randomly…

A:

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

A:

Q: People who were born between 1978 and 1983 are sometimes classified by demographers as "Generation…

A: Here,  let X be the number of people classified as "Generation Y". n = 850 x = 459 p = proportion of…

Q: Suppose that you have bivariate data for a sample of a population. a. How would you decide whether…

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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: Suppose that data are collected from a random sample of 48 male students and 91 female students at a…

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Q: The authors of a paper concluded that more boys than girls listen to music at high volumes. This…

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Q: Suppose that a recent report from the Current Population Survey (CPS) of the United States Census…

A: The question is about hypo. testing Given : Null and alt. hypo : H0 : p = 0.46 H1 : p > 0.46…

Q: It has been claimed that at UCLA 43% of all students live on campus. Researcher Ebony Robinson…

A: Given X=112 n=250

Q: Dr. House is leading a study to determine whether a new drug could significantly improve memory loss…

A: Dr. House is leading a study to determine whether a new drug could significantly improve memory loss…

Q: A statistical study is made to compare the % of smokers in small rural towns to the overall smoking…

A: Given Information:n=1500x=285c=95%=0.95

Q: Many elementary school students in a school district currently have ear infections. A random sample…

A: Given X1=11 X2=12 n1=40 n2=30

Q: Is the proportion of wildfires caused by humans in the south different from the proportion of…

A: n1=590,x1=386,n2=538,x2=363

Q: According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34…

A: The level of significance is 0.01 (=1%).

Q: In 2007, the CDC reported that approximately 6.6 per 1000 (0.66%) children were affected with autism…

A:

Q: After reading an article using research done by the Organization for Economic Co-operation and…

A: The 95% confidence interval for p is (0.25, 0.32).

Q: In a study comparing banks in Germany and Great Britain, a sample of 145 matched pairs of banks was…

A: Given ,  d = German – Great Britain Sample mean of the difference = d¯ = 0.0518 sample standard…

Q: An apple orchard's workers pick 12,500 apples in the month of October. A sample of 300 of these…

A: To find: The best estimate of the percent of apples picked at the orchard in October that are…

Q: Thirty-three percent of all Americans drink bottled water more than once a week (Natural resources…

A: Note: Hi there! Thank you for posting the question. Unfortunately in the sub-part(b), some required…

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

A: Assume that p is the true proportion of all children aged 10-11 that have cell phones.

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01 significance level,…

A: Steps to find the test statistic. The calculations have been done in EXCEL. Denote oij as the…

Q: A researcher is interested in determining if the proportion of children that collect specific types…

A: Given Solution:

Q: Calculate the appropriate measure of association for this study. Round to the nearest hundredth. In…

A:

Q: In the Star and Tribune newspaper, there is an article entitled “1 in 8 school buses fail tests."…

A: Given information: Sample of 200 buses and find that 20 buses fail the safety inspection. Let us…

Q: nts traveling overseas, 47% were women and 53% were men. A random sample of 500 travelers on a large…

A: The null and alternative hypothesis for the proportion of females can be written as: Ho:p=0.47…

Q: in october 1947 the gallup organization surveyed 1000 adult americans and asked are you a total…

A: We have given thatn1 = 1000 , x1 = 378n2 = 1000 , x2 = 333Significance level (α) = 0.05Now,p̂1 =…

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 real estate agent compares the selling prices of randomly selected homes in two municipalities in…

A: The objective of this question is to determine if there is a significant difference in the average…

Q: Of the 328 patients that completed the survey last year, 211 of them claimed to be returning…

A: The objective of the question is to identify the type of observational study conducted based on the…

Q: Before attending a basketball course, a player found that 60% of his shots made a score. After…

A: 1. Let p denotes the population proportion of players found that shots made a score. The sample…

Q: According to the Pew Research Center, the proportion of the American population who use only a…

A: Given that n = 30 x = 16 α=0.10Given claim : proportion greater than 0.37The claim is either the…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.