A study was done looking at cancer rates near a large factory. The researcherscollected data for the survey by placing signs around town, listing a survey websitethat people could log into if they or their family members developed cancer in thelast 10 years. What main type of bias in present in this study design?Resemblance biasLow sample size biasVolunteer biasSample of convenience

Given that A study was done looking at cancer rates near a large factory. The researchers collected…

Answered: A study was done looking at cancer…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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State one possible advantage of using paired samples instead of independent samples.
A researcher wants to study the impact of an after-school program on eating habits among students. In order to conduct this study, the researcher randomly selects some schools in a district to receive the after-school program and some schools not receive it. is it a cluster sample?
Describe why a researcher would use ANOVA. and Design a research idea that would require ANOVA to compute the data
Researchers at Purdue University and Wichita State University found that airlines are doing a better job of getting passengers to their destinations on time.t AirTran Airways and Southwest Airlines were among the leaders in on-time arrivals with both having 88% of their flights arriving on time. But for the 12% of flights that were delayed, how many minutes were these flights late? Sample data showing the number of minutes that delayed flights were late are provided in the file named AirDelay. Data are shown for both airlines. Assume population variances are unknown and unequal. AirTran Southwest 34 59 | 43 30 3 45 64 42 33 66 32 42 | 85 30 48 105 45 28 | 38 85 110 50 10 33 50 26 70 75 45 63 52 83 78 27 70 42 35 33 64 65 27 90 38 52 76 (a) Formulate the hypotheses that can be used to test for a difference between the population mean minutes late for delayed flights by these two airlines. (Let u, = population mean minutes late for delayed Airtran flights and u, = population mean minutes…
A Senior Housemaster wishes to investigate whether some residents in his Hall are Homosexuals andLesbians. He intends to conduct a research about how the phenomenon is affecting students’ perception ofthe Hall in order to write his report for staff meeting. Identify the most appropriately sampling techniqueto be used for the survey and explain how it could be used for the study.
Smallpox Vaccine.ABCNEWS.com published the results of a poll that asked U.S. adults whether they would get a smallpox shot if it were available. Sampling, data collection, and tabulation were done by TNS Intersearch of Horsham, Pennsylvania. When the risk of the vaccine was described in detail, 4 in 10 of those surveyed said they would take the smallpox shot. According to the article, “the results have a three-point margin of error” (for a 0.95 confidence level). Use the information provided to obtain a 95% confidence interval for the percentage of all U.S. adults who would take a smallpox shot, knowing the risk of the vaccine.
Pick a sample problem where despite correlation, causation cannot be reasonable argument.
If a researcher failed to use a random sample, how would this affect the research conclusion? If a researcher failed to use random assignment, how would this affect the research results?
The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. College Grads 485 487 518 517 650 542 570 426 566 499 588 562 497 448 592 453 High School Grads 442 492 580 478 479 425 486 485 528 390 524 535 (b) What is the point estimate of the difference between the means for the two populations? (c) Find the value of the test statistic. (Round your answer…
A survey asked students at a high-school football game whether a fund for extra-curricular activities should be used to buy new equipment for the football team or instruments for the school band. Classify the type of bias demonstrated in this scenario. Think about how the survey process could be changed to eliminate/reduce bias.
How does an observed sample mean qualify as a common outcome?
When we comparing the hospitals in our area for seeking a better care, what statistics or data we should take into consideration ?

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