5. Below is a stem-plot of the birth weights of male babies bom to the smoking...

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5. Below is a stem-plot of the birth weights of male babies bom to the smoking group. The stems are in units of kg. The decimal point is at the 1|9 2346778889 3223467899 412234 513556 6|1 a. Find the median birth weight. b. Find the mean birth weight. c. Find the sample standard deviation of the birth weight. d. Which measurement would be best to use for measuring the center? Justify your answer. 6. A student would like to study the relationship between the mileage per gallon (MPG) and horsepower of some fuel efficient automobiles in a certain year. Below are the information this student collected. Answer the following questions. You can use R to answer all of these questions, no need to do by hand. Car Toyota Prius Hyundai Kona Kia Niro Honda accord Volkswagen Jetta Subaru Impreza Hyundai Elantra Honda Civic Toyota Camry Toyota Corolla MPG (y) 53 32 45 32 33 35 36 40 35 38 Horsepower (x, in hp) 121 170 140 210 158 198 134 170 215 152 a. Draw a scatterplot of the data. Describe the relationship between MPG and Horsepower. b. Determine the covariance and correlation coefficient (r) between MPG and Horsepower. c. Suppose we would like to predict MPG based on a car's horsepower. Find the least-squares equation for the prediction. d. If a car's horsepower is 180 hp, what is the predicted MPG? e. Determine the coefficient of determination (R). Give the interpretation of this value. f. If a car's horsepower is 170 hp with MPG 39, what is the residual? 5. Below is a stem-plot of the birth weights of male babies bom to the smoking group. The stems are in units of kg. The decimal point is at the 1|9 2346778889 3223467899 412234 513556 6|1 a. Find the median birth weight. b. Find the mean birth weight. c. Find the sample standard deviation of the birth weight. d. Which measurement would be best to use for measuring the center? Justify your answer. 6. A student would like to study the relationship between the mileage per gallon (MPG) and horsepower of some fuel efficient automobiles in a certain year. Below are the information this student collected. Answer the following questions. You can use R to answer all of these questions, no need to do by hand. Car Toyota Prius Hyundai Kona Kia Niro Honda accord Volkswagen Jetta Subaru Impreza Hyundai Elantra Honda Civic Toyota Camry Toyota Corolla MPG (y) 53 32 45 32 33 35 36 40 35 38 Horsepower (x, in hp) 121 170 140 210 158 198 134 170 215 152 a. Draw a scatterplot of the data. Describe the relationship between MPG and Horsepower. b. Determine the covariance and correlation coefficient (r) between MPG and Horsepower. c. Suppose we would like to predict MPG based on a car's horsepower. Find the least-squares equation for the prediction. d. If a car's horsepower is 180 hp, what is the predicted MPG? e. Determine the coefficient of determination (R). Give the interpretation of this value. f. If a car's horsepower is 170 hp with MPG 39, what is the residual? 5. Below is a stem-plot of the birth weights of male babies bom to the smoking group. The stems are in units of kg. The decimal point is at the 1|9 2346778889 3223467899 412234 513556 6|1 a. Find the median birth weight. b. Find the mean birth weight. c. Find the sample standard deviation of the birth weight. d. Which measurement would be best to use for measuring the center? Justify your answer. 6. A student would like to study the relationship between the mileage per gallon (MPG) and horsepower of some fuel efficient automobiles in a certain year. Below are the information this student collected. Answer the following questions. You can use R to answer all of these questions, no need to do by hand. Car Toyota Prius Hyundai Kona Kia Niro Honda accord Volkswagen Jetta Subaru Impreza Hyundai Elantra Honda Civic Toyota Camry Toyota Corolla MPG (y) 53 32 45 32 33 35 36 40 35 38 Horsepower (x, in hp) 121 170 140 210 158 198 134 170 215 152 a. Draw a scatterplot of the data. Describe the relationship between MPG and Horsepower. b. Determine the covariance and correlation coefficient (r) between MPG and Horsepower. c. Suppose we would like to predict MPG based on a car's horsepower. Find the least-squares equation for the prediction. d. If a car's horsepower is 180 hp, what is the predicted MPG? e. Determine the coefficient of determination (R). Give the interpretation of this value. f. If a car's horsepower is 170 hp with MPG 39, what is the residual? 5. Below is a stem-plot of the birth weights of male babies bom to the smoking group. The stems are in units of kg. The decimal point is at the 1|9 2346778889 3223467899 412234 513556 6|1 a. Find the median birth weight. b. Find the mean birth weight. c. Find the sample standard deviation of the birth weight. d. Which measurement would be best to use for measuring the center? Justify your answer. 6. A student would like to study the relationship between the mileage per gallon (MPG) and horsepower of some fuel efficient automobiles in a certain year. Below are the information this student collected. Answer the following questions. You can use R to answer all of these questions, no need to do by hand. Car Toyota Prius Hyundai Kona Kia Niro Honda accord Volkswagen Jetta Subaru Impreza Hyundai Elantra Honda Civic Toyota Camry Toyota Corolla MPG (y) 53 32 45 32 33 35 36 40 35 38 Horsepower (x, in hp) 121 170 140 210 158 198 134 170 215 152 a. Draw a scatterplot of the data. Describe the relationship between MPG and Horsepower. b. Determine the covariance and correlation coefficient (r) between MPG and Horsepower. c. Suppose we would like to predict MPG based on a car's horsepower. Find the least-squares equation for the prediction. d. If a car's horsepower is 180 hp, what is the predicted MPG? e. Determine the coefficient of determination (R). Give the interpretation of this value. f. If a car's horsepower is 170 hp with MPG 39, what is the residual?

Answer rating: 100% (QA)

Solution a To find the median birth weight we need to arrange the data in ascending order 192 193 19... View the full answer