The following scatter plot displays data for Mileage (x) and Price ((y). Answer the questions below based on the information provided on the graph. y = -0.1264x + 15624 r= -0.8884 Price vs. Mileage $18,000 $16,000 y=0.1264x+ 15624 R 0.7892 $14,000 $12,000 $10,000 $8,000 $6,000 $4,000 $2,000 10000 20000 30000 40000 s0000 60000 70000 80000 90000 100000 a. Using the regression equation, tell what price you would expect for a car with mileage 55,555 b. Using the regression equation, tell what mileage you would expect for a car worth $13,100. c. Interpret the meaning of r’ in the context of this problem. d. Explain what r tells you about the relationship between price and mileage.

The following scatter plot displays data for Mileage (x) and Price ((y). Answer the questions below based on the information provided on the graph. y = -0.1264x + 15624 r= -0.8884 Price vs. Mileage $18,000 $16,000 y=0.1264x+ 15624 R 0.7892 $14,000 $12,000 $10,000 $8,000 $6,000 $4,000 $2,000 10000 20000 30000 40000 s0000 60000 70000 80000 90000 100000 a. Using the regression equation, tell what price you would expect for a car with mileage 55,555 b. Using the regression equation, tell what mileage you would expect for a car worth $13,100. c. Interpret the meaning of r’ in the context of this problem. d. Explain what r tells you about the relationship between price and mileage.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Graph the following features: Slope = 1 %3D Y-intercept = -4 10 8 6 4 3 -10 -8 -7 -6 -5 -4 -3 -2 -1 1. 3 4 6. 7. 8. 9 10 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10
Assume that the data can be modeled by a straight line and that the trend continues indefinitely. Use two data points to find such a line and then answer the question. Suppose a baseball is thrown at 82 miles per hour. The ball will travel 296 feet when hit by a bat swung at 52 miles per hour and will travel 392 feet when hit by a bat swung at 84 miles per hour. Let y be the number of feet traveled by the ball when hit by a bat swung at x miles per hour. How much farther will a ball travel for each mile-per-hour increase in the speed of the bat? A ball will travel feet farther for each mile-per-hour increase in the speed of the bat. (Type a whole number.)
An economist want to determine the relation between one’s FICO score, x, and the interest rate of a 36-month auto loan, y. The given data represent the interest rate (in percent) a bank would offer on a 36-month auto load for various FICO scores. Credit Score;x Interest Rate (percent);y 545 18.982 595 17.967 640 12.218 675 8.612 705 6.68 750 5.15 Find the least-squares regression line treating the FICO score as the explanatory variable and the interest rate as the response variable. Predict the interest rate a person would pay if their FICO score were the median score of 723.
Which of the following indicates the weakest relationship? a.-0.25 b. 0.054 C-0.45 d. 0.45
Graph the line with the equation y = -x- 3. %3D 10 6. 8. 6. 4 3 -9 -8 -6 -3 -1 3 6. 8. 9 10 -10 -7 -5 -4 -2 1 4 -1 -2 -3 -4 -5 -6 -7 -8 6- -10
An electronics store sells new and used Z-phones. The store manager made the scatter plot below to show the selling prices of used Z-phones and their ages, in monthsIf these data are modeled by the line y=-10x+410, which best describes a valid prediction the manager could make, based on the dataA.If the store sells a Z-phone that is 30 months old, it will probably sell for only $50B.If the store sells a brand-new Z-phone, it can expect a customer to pay about $410C.For every one-month increase in phone age, the price a customer will pay increases by about $10D.For every one-year increase in phone age, the price a customer will pay decreases by about $10
i. Use the best-fit-line equation for the sugar graph, y = 59.6 2.43x, to predict the rating of a cereal with 9 grams of sugar per serving.
This table shows the systolic blood pressure of y, patients x years old. state the slope and interpret the meaning in the context of this problem.
In the United States, it is illegal to drive with a blood alcohol concentration of 0.08 or higher. (A blood alcohol concentration of 0.08 indicates 0.08% alcohol in the blood.) The scatter plot shows the relationship between the number of one-ounce beers consumed per hour by a 200-pound person and that person's corresponding blood alcohol concentration. Also shown is a line that passes through or near the data points. Blood Alcohol Concentration Based y on a Body Weight of 200 Pounds 0.14 0.12 0.10 (7, 0.121) 0.08 0.06 0.04 (3, 0.053) 0.02 2 3 4 5 7 Number of Beers per Hour Source: National Highway Traffic Safety Administration a. Use the two points whose coordinates are shown by the voice balloons to find the point-slope form of the equation of the line that models the blood alcohol concentration of a 200-pound person, y, who consumes x one-ounce beers per hour. b. Write the equation from part (a) in slope-intercept form. Use function notation. c. Use the linear function to predict…
B-E. Please help
The table and scatter plot show the time spent texting, x, and the time spent exercising, y, by each of 9 students last week. The equation of the line of best fit is y =-0.4x+6.99. Time spent Time spent 11+y texting, x exercising, y (in hours) 10 (in hours) 1.9 6.54 Time spent 2.2 5.48 exercising 2.8 6.94 (in hours) 3.5 5.16 4.1 4.50 4.6 4.30 4.9 6.50 5.5 3.36 Time spent texting 5.6 5.97 (in hours) Use the equation of the line of best fit to fill in the blanks below. Give exact answers, not rounded approximations. Observed time spent exercising (in hours) Predicted time spent exercising (in hours) Residual Time spent texting (in hours) (in hours) 4.1 4.9
what would be the estimated y-intercept.