9 17. Eighty-eight residents of an Indian city, who were interviewed during a sample survey, are classified below according to their smoking and tea drinking habits. Calculate Yule's Coefficient of Association and comment on its value.
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- Calculate F statistic for the following. If SSB = 15.62 (dfb =4) and SSW = 6.39 (dfw = 16)Lin Chi-Ling works for an insurance company and is studying the relationship between types of crashes and the vehicles involved in passenger vehicle occupant deaths. As part of your study, you randomly select 4270 vehicle crashes and organize the resulting data as shown in the contingency table. At α = 0.05 can you conclude that the type of crash depends on the type of vehicle? Vehicle Type of crash Car Pickup Sport utility Single-vehicle 1237 547 479 Multiple-vehicle 1453 307 247 What is the Chi-square test statistics and the decision for this question. The Test statistics is . Leave answers in 3 decimal places. DECISION: We the null hypothesis.A researcher wishes to see if there is a difference between men and women in the number of cases of mental disorders. She selects a sample of 30 males and 26 females and classifies them according to their mental disorder. The results are shown. At α = 0.10, can the researcher conclude that there is a difference in the types of disorders according to gender? Gender Anxiety Depression Schizophrenia Male 8 12 10 Female 12 9 5
- Suppose we want to estimate the annual high temperatures of the hottest major cities in the United States. Below is data from 12 cities with the average annual temperature taken from 1971 to 2000 City Temperature (Fahrenheit) Phoenix, Arizona 87.2 Miami, Florida 84.3 Orlando, Florida 82.8 Riverside, California 80.9 Austin, Texas 79.8 Houston, Texas 79.7 San Antonio, Texas 80.3 Las Vegas, Nevada 80.1 Jacksonville, Florida 79.3 New Orleans, Louisiana 78.2 Tampa, Florida 81.7 Los Angeles, California 75.2 What's the population for this study? What's the sample for this study?suppose that from a sample of 200,000 new york workers, 32,400 reported traveling more than an hour an day. From this information, statisticians determined that about 16.2% of the workers in the state traveled more than an hou to work every day in 2011. If there were 8,437,512 workers in the entire population, about how many traveled more than an hour to work each day?According to a recent census, 14.9%of all housing units in a certain country are vacant. A county supervisor wonders if her county is different from this. She randomly selects 832 housing units in her county and finds that 160 of the housing units are vacant. Complete parts a through d below. What is the P-value=???
- 10.46 Social scientists have produced convincing evidence that parental divorce is negatively associated with the educational success of their children. The paper “Maternal Cohabitation and Educational Success” [Sociology of Education (2005) 78:144–164] describes a study thataddresses the impact of cohabiting mothers on the success of their children in graduating from high school. The following table displays the educational outcome by type of family for 1,168 children.a. Display the above data in a graph to demonstrate any differences in the proportions of high school graduates across family types.b. Is there significant evidence that the proportions of students who graduate from high school are different across the various family types?13/14 The coefficient of determination of the expanded data set is =_%. Round to one decimal place as needed. The coefficient of determination of the expanded data set is =_%. Round to one decimal place as needed. Is the point corresponding to the 12th Car influential? Is it an outlier?The following table is based on information from the U.S. Census Bureau regarding the type of health insurance coverage of people by age in the year 2006: Find P(P or D)
- Suppose the average monthly residential natural gas bill in a certain town is $67.95. How is the average monthly gas bill for a home in this town related to the square footage, number of rooms, and age of the home? The following tables shows the average monthly gas bill over the past year, square footage, number of rooms, and age for a sample of 20 homes. Average Monthly GasBill for Last Year Age SquareFootage Rooms $70.20 16 2,537 6 $81.33 2 3,457 8 $45.86 27 976 6 $59.21 12 1,713 7 $117.88 16 3,979 10 $55.78 2 1,328 7 $47.01 27 1,251 6 $52.89 4 827 5 $32.90 12 645 4 $67.04 29 2,849 5 $76.76 1 2,372 7 $60.40 26 900 6 $44.07 14 1,386 5 $28.68 20 1,299 4 $62.70 17 1,441 6 $45.37 13 542 4 $38.09 10 2,140 4 $45.31 22 908 6 $52.45 25 1,568 5 $94.11 27 1,140 10 (a) Develop an estimated regression equation that can be used to predict a residence's average monthly gas bill for last year given its age. (Use x1 for age. Round your numerical values…In March 2017, 9,195 men took trips with median duration of 300 seconds, and 2,439 women took trips with median duration of 319 seconds, on New York City's ride sharing program, Citibike. Overall, what was the median duration of all Citibike ride trips that month? A. 304 seconds B. 315 seconds C. 309.5 seconds D. None of these. E. Cannot be determinedSixteen percent of the worlds population is left-handed. A researcher claims that left-handed individuals are more creative than those who aren’t left-handed. In order to support his claim, he takes a sample of 2100 artists and finds that 15% of them are left-handed. Answer the following.
