Illustrate the rejection region
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- What is meant by the sample space of an experiment?What is an experiment?Data on household vehicle miles of travel (VMT) are compiled annually by the Federal Highway Administration and are published in National Household Travel Survey, Summary of Travel Trends. Independent random samples of 15 midwestern households and 14 southern households provided the following data on last year's VMT, in thoug
- What is the appropriate statistical test to assess whether there is an association between obesity status (normal weight, overweight, obese) and 5-year incident cardiovascular disease (CVD)? Suppose each participant’s obesity status (category) is known as is whether they develop CVD over the next 5 years or not. Statistical Test: Layout of Cross-Tabulation Table (rows x columns):2) Provide an example of how the one way ANOVA may be used3) An academic advisor at a university was studying student class attendance and would like to know if class attendance depends on school. The advisor obtained attendance records for 23 students (6 from engineering, 9 from business, and 8 from arts and sciences) for the fall term. The advisor determines the total number of lectures missed by each student The data appears below. a) Use JMP to fit a one-way ANOVA to the data. Using a = 0.05 draw a conclusion for the ANOVA. Make sure you state your conclusion in the context of the problem. b) Use tukey’s test with a = 0.05 to determine which schools students have significantly differently absence rates. c. Determine with a = 0.05 if the variance in absences is different by School. School Absences Engineering 8 Engineering 10 Engineering 6 Engineering 8 Engineering 4 Engineering 8 Business 5 Business 3 Business 6 Business 7 Business 7 Business 6 Business 2 Business 8 Business 1 ArtsandSciences 9…
- Can use of an online plagiarism-detection system reduce plagiarism in student research papers? The paper "Plagiarism and Technology: A Tool for Coping with Plagiarism"† describes a study in which randomly selected research papers submitted by students during five semesters were analyzed for plagiarism. For each paper, the percentage of plagiarized words in the paper was determined by an online analysis. In each of the five semesters, students were told during the first two class meetings that they would have to submit an electronic version of their research papers and that the papers would be reviewed for plagiarism. Suppose that the number of papers sampled in each of the five semesters and the means and standard deviations for percentage of plagiarized words are as given in the accompanying table. Semester n Mean Standard deviation 1 36 6.34 3.75 2 43 3.33 3.08 3 31 1.76 3.25 4 31 1.84 3.11 5 33 1.50 2.38 For purposes of this exercise, assume that the conditions…What is effect size in statisticUBC coaching center has two branches in Dhaka: one in Dhanmondi (Branch A) and another one in Mohammadpur (Branch B). To understand their students' performance, the coaching center conducts the same test in both branches. A sample of 8 students have been selected from branches A and B respectively, and the following table shows data on their performance. Use appropriate statistical techniques on the data to find out whether (a) there is a statistically significant difference in the students' performance between the two branches, and (b) whether there is a positive or negative relationship between the students' performances of the two branches. Branch A 35 36 32 35 25 32 39 4. Branch B 46 43 64 39 42 41 31 4
- The report “Parents, Teens and Digital Monitoring” (Pew Research Center, January 7, 2016,pewinternet.org/2016/01/07/parents-teens-and-digital-monitoring, retrieved April 4, 2018)reported that 61% of parents of teens age 13 to 17 said that they had checked which websitestheir teens had visited. The 61% figure was based on a representative sample of 1060 parents ofteens in this age group. Construct and interpret a 90% confidence interval for the proportion ofall parents of teens age 13 to 17 who have checked which web sites their teens visit.4) One research question that could be posed using the available data: “Is there an advantage to being a Never smoker when it comes to CoVID-19 severity?” Essentially, we would like to know if the rate of High CoVID-19 severity is lower for Never smokers than it is for Current/Former smokers. Determine a method that would be appropriate for answering this research question. Using StatCrunch* and the available data, perform the statistical procedure deemed appropriate. Hint: In order to adequately answer this question, you will need to perform an additional statistical procedure and go beyond the CI estimates already constructed in Questions 2-3 above. a. What method did you use to answer the research question e.g., One-Sample t-Test for Means? b. Why did you select this particular method to answer the research question? c. In one to two complete sentences, summarize and interpret the relevant findings of your analysis in the context of the research question i.e., what do the findings…You have conducted a survey on 500 people (sample size) of Dhaka city for your final assignment. Your population is all the citizens of Dhaka city. You have collected two types of data from the people Quantitative data: Height and Weight of the people; and Qualitative data: Gender and Opinion of the people on having fixed dress codes for the students in schools. (The uploaded excel file contains the data set that you have collected from these 500 people) Three years ago a Census was conducted on all the people living in Dhaka city which found the following information on the population, Height: Average is 164 centimeters and Standard deviation is 12 centimeters. Weight: Average is 120 pounds and Standard deviation is 25 pounds Link for the Uploaded Excel File: https://docs.google.com/spreadsheets/d/1BSyoYCjtx1D57sahs1azLy_h5N-V3z89FoRE_PMYhp8/edit?fbclid=IwAR3aeNKQjXef6CIjfxI8ah3Ir700P3Jo6gr8Uezzk1-mq2o_iWS17JS9dEQ#gid=0 Questions to be answered: For qualitative data collected…