What is the probability that the arrow will land in a spinner is divided into 10 congruent sections. Each ction is labeled with a number as shown. The section that is labeled with a number that is a nner will be spun one time. multiple of 2? 9. 1 B 10 3 2. 8 4 D 15 1/2 2. 1,
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A: Solution Answer is 0.46
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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- The director of the MBA program at Salterdine University wants to develop a procedure to determine which applicants to admit to the MBA program. The director believes that an applicant’s undergraduate grade point average (GPA) and score on the GMAT exam are helpful in predicting which applicants will be good students. To assist in this endeavor, the director asked a committee of faculty members to classify 70 of the recent students in the MBA program into two groups: (1) good students and (2) weak students. The file MBAStudents.xlsm summarizes these ratings, along with the GPA and GMAT scores for the 70 students. What are the coordinates of the centroids for the good students and the weak students? Use XLMiner’s standard data partition command to partition the data into a training set (with 60% of the observations) and validation set (with 40% of the observations) using the default seed of 12345. Use discriminant analysis to create a classifier for this data. How accurate is this…From the U.S. Census Bureau’s American Community Survey in 2019 it was found that 33.13%of United States residents over the age of 25 had an educational attainment of a bachelor’sdegree or higher. In the District of Columbia, the percentage of residents over the age of 25 whohad attained a bachelor’s degree or higher was 59.67%. An investigator for the U.S. CensusBureau took a random sample of seven residents from the District of Columbia and asked themtheir highest educational degree they had obtained. a) Verify that the sample from the District of Columbia satisfies the conditions of thebinomial experiment. Write one sentence to check each requirement in context of theinvestigation.b) Assuming the sample from the District of Columbia is a binomial experiment, build theprobability distribution in a single table and include the table in your solutions. You maypresent this table horizontally or vertically and leave the probabilities unrounded. Thereare two possible ways to do this: To…According to the Pew Research Center,on the propotion of the American population who use only a cellular telephone (landline) is 0.37. Jason conducts a survey of one hundred fifty 20 to 24 year olds who live on their own and finds that 73 do not have a landline to their home. Does this provide sufficient evidence to conclude that the proportion of 20 to 24 year olds who live on their own and don't have a landline is greater than 0.37? Use a=0.10 level of significance. A) Verify that nP0(1-P0)>10 and n< 0.05N (Assume the population sizes is N=40 million) B) State the appropiate null and alternative hypotheses. C) Indicate whether the hypothesis is left, right, or two- tailed.
- According to the Pew Research Center,on the propotion of the American population who use only a cellular telephone (landline) is 0.37. Jason conducts a survey of one hundred fifty 20 to 24 year olds who live on their own and finds that 73 do not have a landline to their home. Does this provide sufficient evidence to conclude that the proportion of 20 to 24 year olds who live on their own and don't have a landline is greater than 0.37? Use a=0.10 level of significance. D) Compute the test statistic z0. Round to the nearest hundredth. E) Draw a normal model with the area that represents the P-value shaded. F) Determine and interpret the P-value. What is the conclusion of the hypothesis test?The Institute of Education Sciences measures the high school dropout rate as the percentageof 16-through 24-year-olds who are not enrolled in school and have not earned a high schoolcredential. Last year, the high school dropout rate was 8.1%. A polling company recently took asurvey of 1,000 people between the ages of 16 and 24 and found that 6.5% of them are highschool dropouts. The polling company would like to determine whether the dropout rate hasdecreased at a 5% significance levelA colonoscopy is a medical procedure that is designed to find and remove precancerous lesions in the colon before they become cancerous. The article “Association of Colonoscopy and Death from Colorectal Cancer” reports that in a sample of 10,292 people diagnosed with colorectal cancer, 7.1% had previously had a colonoscopy. In a sample of 51,460 people without colorectal cancer, 9.8% had previously had a colonoscopy. 25. Can you conclude that the percentage of people who have had colonoscopies is greater in those without colorectal cancer? Use ? = 0.01
- According to the Pew Research Center, the proportion of the American population who use only a cellular telephone (no landline) is 0.37. Jason conducts a survey of thirty 20- to 24-year-olds who live on their own and finds that 16 do not have a landline to their home. Does this provide sufficient evidence to conclude that the proportion of 20- to 24-year-olds who live on their own and don’t have a landline is greater than 0.37? Use an a=0.10 level of significance. NoteFrom the U.S. Census Bureau’s American Community Survey in 2019 it was found that 33.13% of United States residents over the age of 25 had an educational attainment of a bachelor’s degree or higher. In the District of Columbia, the percentage of residents over the age of 25 who had attained a bachelor’s degree or higher was 59.67%. An investigator for the U.S. Census Bureau took a random sample of seven residents from the District of Columbia and asked them their highest educational degree they had obtained. When there is no data set posted for an investigation, open a blank StatCrunch page by clicking “Open StatCrunch” on the StatCrunch home page. 1) Calculate the proportion of the 100 samples that had at least five District of Columbia residents having obtained a bachelor’s degree or higher. Round your answer to four decimal places and show your calculation in your solutions.A rural community in Queensland was estimated to have a population of 73,000 during a census conducted on January 1st2016. Of these, 3600 people were known to have been diagnosed with type 2 diabetes before this day. During 2016, the entire community was followed and 230 new cases of type 2 diabetes were diagnosed. (a) "What was the prevalence of type II diabetes in this community on January 1st 2016?" (b) "What was the prevalence of type II diabetes in this community on 30th of December 2016?" (c) What was the cumulative incidence of type II diabetes in this community during 2016?" (d) It appeared that not all the people at risk were followed for the entire period. During 2016 about 5,000 people from the entire community either died or left the area to a different state, and assume that the cases of diabetes were healthy at least half of the year what was the person-time of observation for this community cohort
- The control department of a light bulb manufacturer randomly picks 4400 light bulbs from the production lot every week. The records show that, when there is no malfunction, the defect rate in the manufacturing process ( due to imperfections in the material used) is 1%. When 1.25% or more of the light bulbs in the sample of 4400 are defective, the control unit calls repair technicians for service. Answer the following.Gallup conducted a national survey of 1008 American adults, asking “As you know, as part of its efforts to investigate terrorism, a federal government agency obtained records from larger U.S. telephone and internet companies in order to compile telephone call logs and internet communications. Basedonwhatyouhaveheardorreadabouttheprogram,wouldyousay thatyouapproveordisapproveofthisgovernmentprogram?” Ofthosesurveyed,534said they disapprove. a. Determine and interpret the sample proportion b. At the 5% significance level, do the data provide sufficient evidence to conclude that a majority (more than 50%) of American adults disapprove of the government surveillance program?According to the U.S. Census Bureau, 69% of children under the age of 18 years in the United States lived with two parents in 2009. Suppose that in a recent sample of 2025 children, 1218 were living with two parents.