In a sample of 159,949 First year college students, the National survey of student engagement reported that 39% participated in community service or volunteer work. < The survey described in the previous exercise also asked about items related to academics. In response to one of these questions, 42% of first year students reported that they plan to study abroad.  B) Give a 99% confidence interval for the population proportion of first year college students who plan to study abroad.

Q: A sociologist is interested in surveying workers in computer-related jobs to estimate the proportion…

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Q: Construct a 95% confidence interval for the true proportion of all employees of Handy Glass Pty who…

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Q: A Retirement Confidence Survey of 1168 workers and retirees in the United States 25 years of age or…

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Q: A poll is taken in which 363 out of 575 randomly selected voters indicated their preference for a…

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Q: 2. Compute the confidence interval of population proportion. Among 1500 Filipino women included in a…

A: Given,n=1500x=765p^=xnp^=7651500=0.511-p^=1-0.51=0.49α=1-0.95=0.05α2=0.025Z0.025=1.96     (from…

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A: The value of z at a 99% confidence level is 2.576, which can be obtained by using the standard…

Q: 3. A survey of 2,950 Filipinos showed that 2,655 trust the Supreme Court decisions on legal issues.…

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Q: In a study of 480 households, 168 households were found to have 4 cell phones. Find a 95% confidence…

A: Given: x=168 n=480 p^=xn=168480=0.35

Q: Out of a sample of 760 people, 367 own their homes. Construct a 95% confidence interval for the…

A: Given that, Total number of peoples = 760 367 own their homes.  95% confidence level

Q: In a poll of 400 voters in a campaign to eliminate non-returnable beverage containers, 250 of the…

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Q: 2. A national health organization warns that 30% of the middle school students nationwide have been…

A: Given : n = 110 X = 21

Q: uman resources managers, 71% of respondents felt they should hire new staff within the next three…

A: The Upper limit can be calculated as: Upper limit = Point estimate (sample proportion) + Margin of…

Q: In a random sample of 75 college students 60 of them had sunglasses.  Compute a 95% Confidence…

A: Thank you for posting the question. Since you have asked multiple question, we will solve the first…

Q: In a survey of health workers, 25 percent stated that they expect to be promoted after 3 years of…

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Q: Out of 1,500 licensed drivers, 900 admitted that they do not like to drive at night. What is the 92%…

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Q: A Harris Interactive poll reported that 32.4% of 275 randomly selected Americans living in the west…

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Q: A random sample of 75 college students of MSU is selected and 16 are found to have motorcycles on…

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Q: n a survey of 2480 golfers, 372 said they were left-handed. Construct a 92% confidence interval for…

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Q: In an exit poll of 625 scientifically and randomly selected voters, 340 expressed support for…

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Q: A cable company claims that 88% of its customers are fully satisfied with their service. A…

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Q: Out of a sample of 1,450 people, 1,000 said they prefer to drive themselves to work rather than…

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Q: In a sample of 271 people, 153 said they would vote for candidate B.  What is the upper bound of a…

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Q: In a Harvard School of Public Health survey, 2105 of 10,904 randomly selected U.S. college students…

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Q: consider  a random sample of 300 students in a university,75 of them declared that they like playing…

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Q: A college surveys a sample of 263 of its students to determine whether they would prefer a final…

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Q: Of 380 randomly selected medical students, 210 said that they planned to work in a rural community.…

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Q: in a recent poll, 220 people were asked if they liked dogs, and 36% said they did . find the margin…

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Q: search for the Ford Motor Company, you find that a random sample of 800 households includes 721 in…

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Q: An internet service provider sampled 1000 of its customers, 189 of them experienced an interruption…

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Q: To find the proportion of San Diegans subscribed to Disney+ in 2019, a researcher randomly selected…

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Q: Of 254 randomly selected medical students, 25 said that they planned to work in a rural community.…

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Q: must prove that it has more than 25% of the viewing audience after its initial 13-week run in order…

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Q: A university dean is interested in determining the proportion of students who receive some sort of…

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Q: A newsgroup is interested in constructing a 99% confidence interval for the proportion of all…

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Q: Assume a nationwide random survey of 800 adults asked about attitudes toward “alternative medicine”…

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Q: population proportion, what is the 95% confidence interval estimating the proportion of businesses…

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Q: A marketing consultant wants to estimate the proportion of all shoppers at a certain mall who make…

A: n= 132x = 104P^ = xn = 104132 = 0.7879

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Q: At a local college, an admissions officer surveys the incoming class of 1,000 first-year students…

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Q: A random sample of 55 voters is taken, and 28 are found to be in favour of a particular political…

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Q: Out of a sample of 650 high school students, 321 take the bus to school every day. Construct a 99%…

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Q: consider a random sample of 300 students in a university, 75 of them declared that they like playing…

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Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community.…

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Q: 4. In a study of perception, 80 men are tested and 7 are found to have red/green color blindness.…

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Q: Of 40 bank customers depositing a check, 17 received some cash back. Construct a 90 percent…

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Q: In a poll of 500 voters in a campaign to eliminate non-returnable beverage containers, 350 of the…

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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.