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- I need help with part b, to plot the studentized residuals against x1,x2,and x3. Choose the correct graphPut the following steps, for finding a linear model for a set of data using a TI-84 calculator, in the correct order. 1 [Choose] [Choose] Enter your data in STAT-->EDIT with inputs in L1 and outputs in L2 Press STAT-->CALC to access the menu of possible models. Read off your answer, being careful to match the slope to the coefficient of x. Be sure XList: L1, YList: L2, Freg List: (empty) and select "Calculate" Choose LinReg(ax+b) or LinReg(a+bx) [Choose] 3. 4. [Choose] [Choose ]Does the length of a surgery patient's stay in the hospital depend on the length of time the operation took? The table below gives the operative time (in hours) and the length of the hospital stay (in days) for 13 patients. (Comma separated lists of the data are also provided below the table to ease in copying the data to R.) Operative Time (In Hours) (x) Length of Hospital Stay (In Days) (y) 2 8. 2.3 7 2.1 7 2.1 2.2 10 2.3 7 1.3 3 2.5 7 7 1.8 6. 2.2 6. 1 11 1.8 x: 2, 2.3, 2.1, 2.1, 2.2, 2.3, 1.3, 2.5, 2, 1.8, 2.2, 1, 1.8 y: 8, 7,7, 5, 10, 7, 3, 7, 7, 6, 6, 11,6 1. Find the best fit line for the data. y = + 2. Graph the scatter plot of the data together with the best fit line using R. (This portion of the problem is not graded.) 3. If a patient's operation took 1 hour, how many days should we expect them to stay at the hospital?
- A sales manager wants to examine the relationship between the number of daily customers (x) and the revenue generated (y). For this purpose, he made observations in a randomly chosen 6 days for a store and observed the number of daily customers and the revenue (1000 TL). The personally created data set for the x and y variables is included in the attached “Homework data” file. Using the data set defined on your behalf; x1 x2 x3 x4 x5 x6 y1 y2 y3 y4 y5 y6 sb1 Burak data 74 86 96 105 110 124 290 307 331 406 421 481 0.491 a) Create the regression equation b) Interpret b0 and b1 values c) Test and interpret whether there is a linear relationship between the number of daily customers and the income obtained at the level of α = 0.05 significance. Could you explain this question again and in more detail especially not in excel imageAppendix Note: The keys to press may vary depending on the calculator model or brand that you are using. HOW TO USE THE LINEAR REGRESSION FUNCTION OF YOUR CALCULATOR (Gray Screen; Black Font) Step 1: Switch calculator ON ALL Step 2: Clear the calculator's memory: SHIFT CLR 3 REG LIN Step 3: Go to Linear Regression Mode: MODE 3 1 X1 Step 4: Encode Data: M+ X2 y2 M+ X3 y3 M+ Yn M+ II .. .. ..A sales manager wants to examine the relationship between the number of daily customers (x) and the revenue generated (y). For this purpose, he made observations in a randomly chosen 6 days for a store and observed the number of daily customers and the revenue (1000 TL). The personally created data set for the x and y variables is included in the attached “Homework data” file. Using the data set defined on your behalf; x1 x2 x3 x4 x5 x6 y1 y2 y3 y4 y5 y6 sb1 Burak data 74 86 96 105 110 124 290 307 331 406 421 481 0.491 a) Create the regression equation b) Interpret b0 and b1 values c) Test and interpret whether there is a linear relationship between the number of daily customers and the income obtained at the level of α = 0.05 significance. d) Establish and interpret the 95% confidence interval for β1.
- A sales manager wants to examine the relationship between the number of daily customers (x) and the revenue generated (y). For this purpose, he made observations in a randomly chosen 6 days for a store and observed the number of daily customers and the revenue (1000 TL). The personally created data set for the x and y variables is included in the attached “Homework data” file. Using the data set defined on your behalf; x1 x2 x3 x4 x5 x6 y1 y2 y3 y4 y5 y6 sb1 Burak data 74 86 96 105 110 124 290 307 331 406 421 481 0.491 d) Establish and interpret the 95% confidence interval for β1.The data in the following table indicate that between the ages of 1 and 11, the human brain does not grow linearly, or steadily. A scatter plot for the data is shown below the table. The graphing calculator screen to the right displays the percentage of an adult brain, y, for a child at age x, where 1 sxs11. Use this information to complete parts (a) through (c) below. LnReg y = a+b ln x a = 29.67892724 b= 29.78535801 E Click the icon to view the table. W Click the icon to view the scatterplot. a. Explain why a logarithmic function was used to model the data. Choose the correct answer below. O A. The data increase rapidly and then continue to increase even more rapidly. B. The data increase at a steady rate. OC. The data increase rapidly and then begin to decrease. D. The data increase rapidly and then begin to level off. b. Use the graphing calculator screen to express the model in function notation, with numbers rounded to the nearest whole number. f(x) = (Type an expression using x…City Hall wishes to learn about the rate of parking mater use. They choose 8 Downton blocks at random and on each block they choose 5 meters at random. Six weeks are chosen randomly from the year, and the usage on each meter is measured everyday for all the meters in those weeks.Write out an appropriate linear model
- The following data indicate the number of hours per week of using the computer (X) versus the eye vision (Y), rated from 1 to 20, where 20 means the best eye vision. Suppose we want to build a linear model to predict the eye vision of a person who uses the computer 40 hours per week. Use the semiparametric approach (choose k = 3) to estimate the parameters. Computer usage (hrs/wk) Eye vision 10 19 15 18 40 14 30 13 35 15 70 6 85 60 7SPC Bachelors & Associate Deg X Test: Test 1 Review Question list ← → C mylab.pearson.com/Student/PlayerTest.aspx?testid=251861855 MAT1033, Summer 2023 Online Class:930 (0620) Question 10 Question 11 O Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Sign In Question 18 K X SPC Dashboard - St. Petersburg X Slope = (Simplify your answer. Type an integer or a fraction.) y-intercept = (Type an ordered pair.) 4 mic Step 1: Barnes & Noble Cc X Find the slope and y-intercept of the line whose graph is shown to the right. Then use these to write an equation of the line. Pearson MyLab and Maste X ... Question 19 of 20 The equation of the line is (Simplify your answer. Type your answer in slope-intercept form. Use integers or fractions for any numbers in the equation.) P Test 1 ReviewA computer engineer needs to know how the efficiency of a new computerprogram depends on the size of incoming data. Efficiency will be measuredby the number of processed requests per hour. Applying the program todata sets of different sizes with the following results. The response variableis the number of processed requests (Y) and to predict it from the size of adata set (X). Estimate the quadratic regression model and use it to find theprocessed requests when the data size is 14 GB.Data size (GB) X 6 7 7 8 10 10 15Processed requests Y 50 43 44 37 25 26 15