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- Mercury is a persistent and dispersive environmental contaminantfound in many ecosystems around the world.When released as an industrial by-product, it often finds itsway into aquatic systems where it can have deleteriouseffects on various avian and aquatic species. The accompanyingdata on blood mercury concentration (mg/g) for adultfemales near contaminated rivers in Virginia was read froma graph in the article “Mercury Exposure Effects theReproductive Success of a Free-Living TerrestrialSongbird, the Carolina Wren” (The Auk, 2011: 759–769;this is a publication of the American Ornithologists’ Union)..20 .22 .25 .30 .34 .41 .55 .561.42 1.70 1.83 2.20 2.25 3.07 3.25a. Determine the values of the sample mean and samplemedian and explain why they are different.[Hint: ox1 5 18.55.]b. Determine the value of the 10% trimmed mean andcompare to the mean and median.c. By how much could the observation .20 be increasedwithout impacting the value of the sample median?A) What is the purpose of the “callout bubble” in the bottom right-hand corner of the graph, showing a tiny red square inside the yellow square? Why do you suppose the author felt the need to use a callout bubble? B) Data from this source show that the rate of symptomatic infection with COVID for people who have been vaccinated is about 100 infections per 102,000 vaccinations. As of July 30, 2021, data show that164,000,000 Americans have been fully vaccinated. How many of these vaccinated Americans would be expected to become infected with COVID and display symptoms? C) Data from this source show that the rate of death from COVID for people who have been vaccinated is about 1 death per 102,000 vaccinations. As of July 30, 2021, data show that 164,000,000 Americans have been fully vaccinated. How many of these vaccinated Americans would be expected to die from COVID?A process manufactures plastic tapes in batches of 50 units (tapes). The inspection records of the last 30 batches produced during one week individually by 30 workers of this process revealed the following results: (IMAGE) The production supervisor, will award a prize to the most outstanding worker of the week and in addition a party will be given in his honor. a) Draw a graph of worker vs. % of non-conforming product. b) What is the average quality level of the week obtained by the workers in this process? c) To whom should the award be assigned?Who was the best worker? Who was the worst worker? d) What would you do to improve the results of this process?
- The attached file contains hypothetical data for working this problem. Goodman Corporation’s and Landry Incorporated’s stock prices and dividends, along with the Market Index, are shown in the file. Stock prices are reported for December 31 of each year, and dividends reflect those paid during the year. The market data are adjusted to include dividends. Construct a scatter diagram graph that shows Goodman’s and Landry’ returns on the vertical axis and the Market Index’s returns on the horizontal axis.Mercury is a persistent and dispersive environmental contaminant found in many ecosystems around the world. When released as an industrial by-product, it often finds its way into aquatic systems where it can have deleterious effects on various avian and aquatic species. The accompanying data on blood mercury concentration (µg/g) for adult females near contaminated rivers in a state was read from a graph in an article. 0.20 0.23 0.26 0.30 0.35 0.41 0.54 0.57 1.43 1.70 1.84 2.20 2.24 3.08 3.26 (a) Determine the values of the sample mean and sample median. [Hint: Σxi = 18.61.] (Round your answers to four decimal places.) - x = ? ~ x = ? Explain why they are different. There is heavy positive skewness in the data. They aren't different since the data is symmetric. There are an odd number of data values. There is heavy negative skewness in the data. The sample mean and sample median are never equal. (b) Determine the value of the 10% trimmed mean. (Round your answer to…Mercury is a persistent and dispersive environmental contaminant found in many ecosystems around the world. When released as an industrial by-product, it often finds its way into aquatic systems where it can have deleterious effects on various avian and aquatic species. The accompanying data on blood mercury concentration (µg/g) for adult females near contaminated rivers in a state was read from a graph in an article. 0.20 0.23 0.24 0.30 0.35 0.41 0.54 0.57 1.43 1.70 1.82 2.20 2.24 3.08 3.24 (a) Determine the values of the sample mean and sample median. Hint: xi = 18.55. (Round your answers to four decimal places.) x== Explain why they are different. The sample mean and sample median are never equal.They aren't different since the data is symmetric. There is heavy negative skewness in the data.There are an odd number of data values.There is heavy positive skewness in the data. (b) Determine the value of the 10% trimmed mean.…
- Researchers want to know at the .04 level if children under 10 spend less time watching TV than teens. Under 10 24.8 25 26.8 22 23 Teens 26.7 24 26 24.5 28 1. The graph is (give one answer: L - Left tailed, R - Right tailed, 2 - Two-Tailed) 2. Critical Value (start with negative and separate with a comma if there are 2) 3. Test statistic 4. The 3-decimal p-Value 5. Test statistic is where compared to CV? (Give a letter: L - Left M - Middle R - Right)This question is from the textbook and I had raised a request as the graph was not visible in your solution. The Cambridge Study in Delinquent Development was under-taken in north London to investigate the links between criminal behavior in young men and the socioeconomic factors of their upbringing. A cohort of 395 boys was followed for about 20 years, starting at the age of 8 or 9. The following table shows the total number of criminal convictions by the boys between the start and end of the study. Number of convictions Frequency 0 265 1 49 2 21 3 19 4 10 5 10 6 2 7 2 8 4 9 2 10 1 11 4 12 3 13 1 14 2 a) Display the frequency distribution in a graph. Which type of graph is most appropriate? (b) Describe the shape of the frequency distribution. Is it skewed or is it symmetric? If skewed, is it positively skewed or negatively skewed? Is it unimodal or bimodal? Are there outliers in the…Which of the following are reasons that are potential limitations to a research study? Choose all that apply. People who were refused to answer The graphs are drawn in a way to mislead the reader The research was not able to survey every individual from the population The funders of the project are partial to the results Trying to conclude that there is a cause – and- effect relationship when something else causes both Two factors cannot be separated to determine which is the one that is responsible to outcome
- Commercial dredging operations in ancient rivers occasionally uncover archaeological artifacts of great importance. One such artifact is Bronze Age spearheads recovered from ancient rivers in Ireland. A recent study gave the following information regarding discoveries of ancient bronze spearheads in Irish rivers (a). Select a Pareto chart. (b). Select a circle graph.Which of these statements is not a condition for an exposure to quality as a risk factor? There is a dose-response relationship There is temporality of the exposure and the disease in terms of occurrence The observed relationship between exposure and the disease in not due to some source of error in the design The observed relationship between exposure and the disease is due to due to some source of error in the design.For the following line graph, State at least one type of conclusion that could be made from the data provided for the KPI. Suggest one other data source that would provide more information to make data-driven decisions. Explain what information that source would supply. Examples: 1)The enrollment data is visualized using a line graph, which shows the total number of students enrolled at STC over time. The data shows that enrollment has been steadily increasing over the past few years. The data source for this information is the Integrated Postsecondary Education Data System (IPEDS). 2) Data on enrollment for the previous five years can be found on the South Texas College KPI webpage. According to the data, enrollment has grown every year during that time. Data on the number of applications received, the number of students accepted, and the number of students enrolling would also be useful in making enrollment decisions. This information would shed light on whether the rise in…