ride in a certain island. The table below shows the chlo 142 M (% of roadway area) y (chloride concentration mm/L 0.1900 0.7000 04700 4.4000 10.6000 118000
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Find a 90% confidence interval of mean chloride concentration when roadway area is 0.8%
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- A diabetic person is interested in determining how the amount of aerobic exercise impacts his blood sugar. When blood sugar reaches 170 mg/dl, he goes out for a run at a pace of 10 minutes per mile. On different days, he runs different distances and measures his blood sugar after completing his run. The preferred blood sugar level is in the range of 80 to120 mg/dl. Levels that are too low or too high are extremely dangerous. The data generated are given in the following table: Distance (miles),x Blood sugar(mg/dl gram),y 2 136 2 146 2.5 131 2.5 125 3 120 3 116 3.5 104 3.5 95 4 85 4 94 4.5 83 4.5 75 Based on the scenario above, analyse the data with appropriate statistical methods and describe your findings in details. Use alpha=0.05 [note: use hypothesis, test statistics confidence interval etc.] ]What type of analysis and descriptive statistics should be conducted to best depict the relationship between the following variables? Also, specify the type of variable in each question ( such as nominal, ordinal, continuous, etc) and which is the independent and dependent variable in each question. the association between the number of hours in the operating room and the number of hours on a bypass pump? the relationship between the number of days in the ICU and gender?Identify the category of data, type of quantitative data* and scale of measurement of the given variables. (*please answer NOT APPLICABLE if your answer is qualitative) Variable Category of Data Type of Quantitative Scale of Measurement Anemia Status 11. 14. 17. Socioeconomic Status 12. 15. 18. Educational Attainment 13. 16. 19. Identify the type of code appropriate for the given variable: Age group Blood type Eye color Home address Use of drug
- Determine what would be the most appropriate method of Colleting data today and the Scale of Measurement that will be used in a study to “Find the Number of schools that closed down in 2020 due to the CONVIRUS… Briefly explain justification of your choices in Number 1…PLease we’ve decided to create a survey on the population of pet owners in the Bay Area ranging from younger to older generation individuals. Number of pets owned Frequency Relative Frequency Cumulative Frequency 0 20 20/48=0.4167 20 1 14 14/48=0.29167 34 2 11 11/48=0.2292 45 3 3 3/48=0.0625 48 4 0 0/48=0 5 0 0/48=0 5 or more 0 0/48=0 Summarize your data in a chart with columns showing data value, frequency, relative frequency and cumulative relative frequency. ____Answer the following (rounded to 2 decimal places): 1. ?̅= 2. s = 3. First quartile = 4. Median = 5. 70th percentile = What value is 2 standard deviations above the mean? What value is 1.5 standard deviations below the mean? Construct a histogram displaying your data. In complete sentences, describe the shape of your graph. Do you notice any potential…4- It is desired to compare the grade point averages of the students studying industrial engineering for 3 different semesters. What is the measurement format of the variable to be compared? a) Discrete quantitative data B) Discrete qualitative data NS) None D) Continuous quantitative data TO) Continuous qualitative data
- Based on the data of air pollution in New Mexico in 2009, the Environmental Protection Agency (EPA) decided to publish a new stricter regulation effective in January 2010 to reduce hydrocarbon pollution. EPA wants to evaluate whether the new regulation makes significant differences in reducing pollution. EPA collects data of monthly hydrocarbon pollution level as follows: Table Attached Question: What is the hypothesis of the study?For this part of the project, you will calculate descriptive statistics for the first question, age, using the Excel spreadsheet your instructor will send with all the class data at the end of Module 2. This sheet will also provide space for you to do the following descriptive statistics under the “Module 3” tab: You will submit the Excel sheet with the following information: Make a Frequency Distribution with 5 classes, also list the midpoints, relative frequency, and cumulative relative frequency Make a cumulative relative frequency ogive Don’t forget descriptive title and labels on x and y axis (ogive is not descriptive, what does the graph represent?) Make a frequency polygon Don’t forget a descriptive title and labels on x and y axis (polygon is not descriptive, what does the graph represent?) Calculate the mean Calculate the median Calculate the sample standard deviation (our data is sample from our class, not a population!) Calculate the Q1 and Q3 valuesTo do this: You have been provided with two sets of data, one for concrete cube testing and the other for climatic information. You need to present the data using a range of charts and graphs before identifying statistically important variables and evaluating the data. First, using the concrete cube test results, you need to: Arrange the data into equal classes Determine the frequency distribution Draw the frequency histogram