6. The following graph shows the relationship between hours studying and final exam scores Hours Studying and Final Exam Score 100 90 80 70 y = 4x + 52 60 R = 0.9362 50 40 30 20 10 4 6. 10 Hours Studying From the graph, answer the following questions: (A a) Is this one-variable or two-variable data? Identify the variable(s) b) What is the equation of the line of best fit?(find the slope and y-intercep from the graph) c) Predict the final exam score of someone who studied for 8.5 hours? d) Rachel got an 84% on the exam. Predict how many hours she studied Final Exam Score (%)

6. The following graph shows the relationship between hours studying and final exam scores Hours Studying and Final Exam Score 100 90 80 70 y = 4x + 52 60 R = 0.9362 50 40 30 20 10 4 6. 10 Hours Studying From the graph, answer the following questions: (A a) Is this one-variable or two-variable data? Identify the variable(s) b) What is the equation of the line of best fit?(find the slope and y-intercep from the graph) c) Predict the final exam score of someone who studied for 8.5 hours? d) Rachel got an 84% on the exam. Predict how many hours she studied Final Exam Score (%)

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

See similar textbooks

Similar questions

Grades The data set below shows midterm scores froman Introductory Statistics course. a) Fit a model predicting the second midterm score fromthe first.b) Comment on the model you found, including adiscussion of the assumptions and conditions forregression. Is the coefficient for the slope statisticallysignificant?c) A student comments that because the P-value for theslope is very small, Midterm 2 is very well predicted from Midterm 1. So, he reasons, next term the profes-sor can give just one midterm. What do you think?
Which of the slopes matches best with the slope of the data in the scatter plot? would it be m = 3/8?, m = 8/3?, m = - 3/8? or would it be m = - 8/3???
The table and scatter plot show the time spent studying, x, and the midterm score, y, for each of 10 students. The equation of the line of best fit is y = 4.2x+11.58. Time spent Midterm 100- studying, x (in hours) score, y 90 3.3 21.51 4.0 28.04 Midterm score 60 Xx 4.8 22.89 50- 5.7 36.06 40- 6.9 36.28 30- 20- 8.2 58.20 104 8.5 45.42 14 10 12 14 16 18 20 22 24 12 9.1 56.72 12.1 70.00 Time spent studying (in hours) 15.0 74.58 Use the equation of the line of best fit to fill in the blanks below. Give exact answers, not rounded approximations. Time spent studying (in hours) Observed midterm Predicted midterm Residual Score Score 12.1 15.0
The heights and weights of elephants at the zoo are recorded in the table. Height (in feet) 4 6 7 7 7.5 9 Weight (in tons) 1.25 1.9 2.5 2.1 2.3 3.4 Interpret the slope, using the equation for the line of best fit ŷ = 0.513x − 0.408; for every additional foot in height, the elephant is predicted to gain 0.513 tons of weight ŷ = 0.408x − 0.513; for every additional foot in height, the elephant is predicted to gain 0.408 tons of weight ŷ = 0.408x − 0.513; for every additional foot in height, the elephant is predicted to lose 0.513 tons of weight ŷ = 0.513x − 0.408; for every additional foot in height, the elephant is predicted to lose 0.408 tons of weight
64. Average Wages The average hourly wage (adjusted to 1982 dollars) was $7.66 in 1990 and $9.16 in 2017. (Source: U.S. Bureau of Labor Statistics.) (a) Find a point-slope form of a line that passes through the points (1990, 7.66) and (2017, 9.16). (b) Interpret the slope. (c) Use the equation from part (a) to approximate the hourly wage in 2009. Compare it with the actual value of $8.27.
The Coast Starlight Amtrak train runs between Seattle and Los Angeles. The table below contains all distances between stops and the typical travel time for each of those distances. DISTANCE BETWEEN STOPS (miles) TIME TO TRAVEL THIS DISTANCE (minutes) 10 52 32 115 40 55 50 61 49 58 56 32 54 31 61 27 84 176 91 322 102 173 112 124 194 64 235 254 246 372 356 195 What is the equation for the best fit line? What is the meaning of the slope in this context? What is the R2R2for the regression line? The distance between LA and Santa Barbara is 102 miles. Use the linear model to predict how long this trip will take. If the actual trip takes 173 minutes, what is the associated residual?
• Given the following data in the table:- 1- Draw the curve where Y is vertical axis and X is horizontal axis. 2- Find the slope between point B and C. Points Y А 1 42 B 2 30 3 18 D 4 12
The owner of Reliable Furniture was studying the relationship between sales (y) and the amount spend on advertising (x). A random sample of 65 homes gives the following information. The intercept = 17.28 and the slope = 0.8 The estimated sales for 10 amount of advertisment is
The percent of defects is the x-coordinate, while the percent of new machines is the y-coordinate. So, the table of values corresponds to the points (25,32), (20,40), (15,50), (10,65), (5,70), (0,85). Question Using the linear relationship graphed above, estimate the percent of new machines if there is 12% defects in the shoes at various production facilities. Provide your answer below: _____
The following data refers to the amount of caffeine (in mg) consumed by ten university students and their time to complete a practice quiz (in minutes) for a Econominc Exam. Time Caffeine 75 180 83 150 65 195 60 240 82 120 58 280 52 270 66 190 55 300 60 250 Calculate the slope and y-intercept for the data above, provide the equation for the line of best fit and interprt the slope and y intercept for the data Let y = time and x = caffeine amount.
The graph shows the total cost y for x bags of popcorn sold. What is the slope of the line? Popcorn 20 18 16 14 12 10 8 1. 3 4 5 6 7 8 9 10 Bags Sold Select one: 2. 4. 2. Total Cost ($)
A researcher explored the relationship between the percent of snow days during the month of January and the percent of students that receive an A on class finals at the same schools. The researcher collects information from 6 schools, shown in the table below. Use the graph below to plot the points and develop a linear relationship between the percent of January snow days and the percent of 'A' final exams. School Number % of Snow Days % of A Finals 1 5 25 2 7 45 3 10 50 4 12 65 5 20 70 6 25 86 Using the linear relationship graphed above, estimate the percent of 'A' finals if there are 2% snow days. Provide your answer below: